Add doxygen support
 - Stolen from LLVM with minor modifications



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54103 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/doxygen.css b/docs/doxygen.css
new file mode 100644
index 0000000..83b049b
--- /dev/null
+++ b/docs/doxygen.css
@@ -0,0 +1,378 @@
+BODY,H1,H2,H3,H4,H5,H6,P,CENTER,TD,TH,UL,DL,DIV {
+	font-family: Verdana,Geneva,Arial,Helvetica,sans-serif;
+}
+BODY,TD {
+ font-size: 90%;
+}
+H1 {
+ text-align: center;
+ font-size: 140%;
+ font-weight: bold;
+}
+H2 {
+ font-size: 120%;
+ font-style: italic;
+}
+H3 {
+ font-size: 100%;
+}
+CAPTION { font-weight: bold }
+DIV.qindex {
+	width: 100%;
+	background-color: #eeeeff;
+	border: 1px solid #b0b0b0;
+	text-align: center;
+	margin: 2px;
+	padding: 2px;
+	line-height: 140%;
+}
+DIV.nav {
+	width: 100%;
+	background-color: #eeeeff;
+	border: 1px solid #b0b0b0;
+	text-align: center;
+	margin: 2px;
+	padding: 2px;
+	line-height: 140%;
+}
+DIV.navtab {
+       background-color: #eeeeff;
+       border: 1px solid #b0b0b0;
+       text-align: center;
+       margin: 2px;
+       margin-right: 15px;
+       padding: 2px;
+}
+TD.navtab {
+       font-size: 70%;
+}
+A.qindex {
+       text-decoration: none;
+       font-weight: bold;
+       color: #1A419D;
+}
+A.qindex:visited {
+       text-decoration: none;
+       font-weight: bold;
+       color: #1A419D
+}
+A.qindex:hover {
+	text-decoration: none;
+	background-color: #ddddff;
+}
+A.qindexHL {
+	text-decoration: none;
+	font-weight: bold;
+	background-color: #6666cc;
+	color: #ffffff;
+	border: 1px double #9295C2;
+}
+A.qindexHL:hover {
+	text-decoration: none;
+	background-color: #6666cc;
+	color: #ffffff;
+}
+A.qindexHL:visited { 
+ text-decoration: none; background-color: #6666cc; color: #ffffff }
+A.el { text-decoration: none; font-weight: bold }
+A.elRef { font-weight: bold }
+A.code:link { text-decoration: none; font-weight: normal; color: #0000FF}
+A.code:visited { text-decoration: none; font-weight: normal; color: #0000FF}
+A.codeRef:link { font-weight: normal; color: #0000FF}
+A.codeRef:visited { font-weight: normal; color: #0000FF}
+A:hover { text-decoration: none; background-color: #f2f2ff }
+DL.el { margin-left: -1cm }
+.fragment {
+       font-family: Fixed, monospace;
+       font-size: 95%;
+}
+PRE.fragment {
+	border: 1px solid #CCCCCC;
+	background-color: #f5f5f5;
+	margin-top: 4px;
+	margin-bottom: 4px;
+	margin-left: 2px;
+	margin-right: 8px;
+	padding-left: 6px;
+	padding-right: 6px;
+	padding-top: 4px;
+	padding-bottom: 4px;
+}
+DIV.ah { background-color: black; font-weight: bold; color: #ffffff; margin-bottom: 3px; margin-top: 3px }
+TD.md { background-color: #F4F4FB; font-weight: bold; }
+TD.mdPrefix {
+       background-color: #F4F4FB;
+       color: #606060;
+	font-size: 80%;
+}
+TD.mdname1 { background-color: #F4F4FB; font-weight: bold; color: #602020; }
+TD.mdname { background-color: #F4F4FB; font-weight: bold; color: #602020; width: 600px; }
+DIV.groupHeader {
+       margin-left: 16px;
+       margin-top: 12px;
+       margin-bottom: 6px;
+       font-weight: bold;
+}
+DIV.groupText { margin-left: 16px; font-style: italic; font-size: 90% }
+BODY {
+	background: white;
+	color: black;
+	margin-right: 20px;
+	margin-left: 20px;
+}
+TD.indexkey {
+	background-color: #eeeeff;
+	font-weight: bold;
+	padding-right  : 10px;
+	padding-top    : 2px;
+	padding-left   : 10px;
+	padding-bottom : 2px;
+	margin-left    : 0px;
+	margin-right   : 0px;
+	margin-top     : 2px;
+	margin-bottom  : 2px;
+	border: 1px solid #CCCCCC;
+}
+TD.indexvalue {
+	background-color: #eeeeff;
+	font-style: italic;
+	padding-right  : 10px;
+	padding-top    : 2px;
+	padding-left   : 10px;
+	padding-bottom : 2px;
+	margin-left    : 0px;
+	margin-right   : 0px;
+	margin-top     : 2px;
+	margin-bottom  : 2px;
+	border: 1px solid #CCCCCC;
+}
+TR.memlist {
+   background-color: #f0f0f0; 
+}
+P.formulaDsp { text-align: center; }
+IMG.formulaDsp { }
+IMG.formulaInl { vertical-align: middle; }
+SPAN.keyword       { color: #008000 }
+SPAN.keywordtype   { color: #604020 }
+SPAN.keywordflow   { color: #e08000 }
+SPAN.comment       { color: #800000 }
+SPAN.preprocessor  { color: #806020 }
+SPAN.stringliteral { color: #002080 }
+SPAN.charliteral   { color: #008080 }
+.mdTable {
+	border: 1px solid #868686;
+	background-color: #F4F4FB;
+}
+.mdRow {
+	padding: 8px 10px;
+}
+.mdescLeft {
+       padding: 0px 8px 4px 8px;
+	font-size: 80%;
+	font-style: italic;
+	background-color: #FAFAFA;
+	border-top: 1px none #E0E0E0;
+	border-right: 1px none #E0E0E0;
+	border-bottom: 1px none #E0E0E0;
+	border-left: 1px none #E0E0E0;
+	margin: 0px;
+}
+.mdescRight {
+       padding: 0px 8px 4px 8px;
+	font-size: 80%;
+	font-style: italic;
+	background-color: #FAFAFA;
+	border-top: 1px none #E0E0E0;
+	border-right: 1px none #E0E0E0;
+	border-bottom: 1px none #E0E0E0;
+	border-left: 1px none #E0E0E0;
+	margin: 0px;
+}
+.memItemLeft {
+	padding: 1px 0px 0px 8px;
+	margin: 4px;
+	border-top-width: 1px;
+	border-right-width: 1px;
+	border-bottom-width: 1px;
+	border-left-width: 1px;
+	border-top-color: #E0E0E0;
+	border-right-color: #E0E0E0;
+	border-bottom-color: #E0E0E0;
+	border-left-color: #E0E0E0;
+	border-top-style: solid;
+	border-right-style: none;
+	border-bottom-style: none;
+	border-left-style: none;
+	background-color: #FAFAFA;
+	font-size: 80%;
+}
+.memItemRight {
+	padding: 1px 8px 0px 8px;
+	margin: 4px;
+	border-top-width: 1px;
+	border-right-width: 1px;
+	border-bottom-width: 1px;
+	border-left-width: 1px;
+	border-top-color: #E0E0E0;
+	border-right-color: #E0E0E0;
+	border-bottom-color: #E0E0E0;
+	border-left-color: #E0E0E0;
+	border-top-style: solid;
+	border-right-style: none;
+	border-bottom-style: none;
+	border-left-style: none;
+	background-color: #FAFAFA;
+	font-size: 80%;
+}
+.memTemplItemLeft {
+	padding: 1px 0px 0px 8px;
+	margin: 4px;
+	border-top-width: 1px;
+	border-right-width: 1px;
+	border-bottom-width: 1px;
+	border-left-width: 1px;
+	border-top-color: #E0E0E0;
+	border-right-color: #E0E0E0;
+	border-bottom-color: #E0E0E0;
+	border-left-color: #E0E0E0;
+	border-top-style: none;
+	border-right-style: none;
+	border-bottom-style: none;
+	border-left-style: none;
+	background-color: #FAFAFA;
+	font-size: 80%;
+}
+.memTemplItemRight {
+	padding: 1px 8px 0px 8px;
+	margin: 4px;
+	border-top-width: 1px;
+	border-right-width: 1px;
+	border-bottom-width: 1px;
+	border-left-width: 1px;
+	border-top-color: #E0E0E0;
+	border-right-color: #E0E0E0;
+	border-bottom-color: #E0E0E0;
+	border-left-color: #E0E0E0;
+	border-top-style: none;
+	border-right-style: none;
+	border-bottom-style: none;
+	border-left-style: none;
+	background-color: #FAFAFA;
+	font-size: 80%;
+}
+.memTemplParams {
+	padding: 1px 0px 0px 8px;
+	margin: 4px;
+	border-top-width: 1px;
+	border-right-width: 1px;
+	border-bottom-width: 1px;
+	border-left-width: 1px;
+	border-top-color: #E0E0E0;
+	border-right-color: #E0E0E0;
+	border-bottom-color: #E0E0E0;
+	border-left-color: #E0E0E0;
+	border-top-style: solid;
+	border-right-style: none;
+	border-bottom-style: none;
+	border-left-style: none;
+       color: #606060;
+	background-color: #FAFAFA;
+	font-size: 80%;
+}
+.search     { color: #003399;
+              font-weight: bold;
+}
+FORM.search {
+              margin-bottom: 0px;
+              margin-top: 0px;
+}
+INPUT.search { font-size: 75%;
+               color: #000080;
+               font-weight: normal;
+               background-color: #eeeeff;
+}
+TD.tiny      { font-size: 75%;
+}
+a {
+	color: #252E78;
+}
+a:visited {
+	color: #3D2185;
+}
+.dirtab { padding: 4px;
+          border-collapse: collapse;
+          border: 1px solid #b0b0b0;
+}
+TH.dirtab { background: #eeeeff;
+            font-weight: bold;
+}
+HR { height: 1px;
+     border: none;
+     border-top: 1px solid black;
+}
+
+/* 
+ * LLVM Modifications.
+ * Note: Everything above here is generated with "doxygen -w htlm" command. See
+ * "doxygen --help" for details. What follows are CSS overrides for LLVM 
+ * specific formatting. We want to keep the above so it can be replaced with
+ * subsequent doxygen upgrades.
+ */
+
+.footer {
+        font-size: 80%;
+        font-weight: bold;
+        text-align: center;
+        vertical-align: middle;
+}
+.title {
+  font-size: 25pt; 
+  color: black; background: url("../img/lines.gif");
+  font-weight: bold;
+  border-width: 1px;
+  border-style: solid none solid none;
+  text-align: center;
+  vertical-align: middle;
+  padding-left: 8pt;
+  padding-top: 1px;
+  padding-bottom: 2px
+}
+A:link {
+        cursor: pointer;
+        text-decoration: none;
+        font-weight: bolder;
+}
+A:visited {
+        cursor: pointer;
+        text-decoration: underline;
+        font-weight: bolder;
+}
+A:hover {
+        cursor: pointer;
+        text-decoration: underline;
+        font-weight: bolder;
+}
+A:active {
+        cursor: pointer;
+        text-decoration: underline;
+        font-weight: bolder;
+        font-style: italic;
+}
+H1 {
+ text-align: center;
+ font-size: 140%;
+ font-weight: bold;
+}
+H2 {
+ font-size: 120%;
+ font-style: italic;
+}
+H3 {
+ font-size: 100%;
+}
+A.qindex {}
+A.qindexRef {}
+A.el { text-decoration: none; font-weight: bold }
+A.elRef { font-weight: bold }
+A.code { text-decoration: none; font-weight: normal; color: #4444ee }
+A.codeRef { font-weight: normal; color: #4444ee }