Add support for dos-style files


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13840 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/projects/Stacker/lib/compiler/Lexer.l b/projects/Stacker/lib/compiler/Lexer.l
index e45cdee..a6375d3 100644
--- a/projects/Stacker/lib/compiler/Lexer.l
+++ b/projects/Stacker/lib/compiler/Lexer.l
@@ -71,7 +71,7 @@
 /* You can also embed them in ( ... ) */
 Comment2	\(.*\)
 /* We ignore white space */
-White		[ \t\n]
+White		[ \t\r\n]
 
 /* jdentifiers start with a % sign */
 Identifier  	[A-Za-z][-A-Za-z0-9_]*