Made many ConstString functions inlined in the header file.

Changed all of our synthesized "___clang" functions, types and variables
that get used in expressions over to have a prefix of "$_lldb". Now when we
do name lookups we can easily switch off of the first '$' character to know
if we should look through only our internal (when first char is '$') stuff,
or when we should look through program variables, functions and types.

Converted all of the clang expression code over to using "const ConstString&" 
values for names instead of "const char *" since there were many places that
were converting the "const char *" names into ConstString names and them
throwing them away. We now avoid making a lot of ConstString conversions and
benefit from the quick comparisons in a few extra spots.

Converted a lot of code from LLVM coding conventions into LLDB coding 
conventions.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@116634 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Expression/ClangUserExpression.cpp b/source/Expression/ClangUserExpression.cpp
index c1eeb24..50fffd0 100644
--- a/source/Expression/ClangUserExpression.cpp
+++ b/source/Expression/ClangUserExpression.cpp
@@ -88,7 +88,7 @@
     if (m_cplusplus)
     {
         m_transformed_stream.Printf("void                                   \n"
-                                    "___clang_class::%s(void *___clang_arg) \n"
+                                    "$__lldb_class::%s(void *$__lldb_arg) \n"
                                     "{                                      \n"
                                     "    %s;                                \n" 
                                     "}                                      \n",
@@ -100,7 +100,7 @@
     else
     {
         m_transformed_stream.Printf("void                           \n"
-                                    "%s(void *___clang_arg)         \n"
+                                    "%s(void *$__lldb_arg)         \n"
                                     "{                              \n"
                                     "    %s;                        \n" 
                                     "}                              \n",