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/ClangExpressionParser.cpp b/source/Expression/ClangExpressionParser.cpp
index 506f2f5..94c1c01 100644
--- a/source/Expression/ClangExpressionParser.cpp
+++ b/source/Expression/ClangExpressionParser.cpp
@@ -272,7 +272,7 @@
     
     m_compiler->setASTContext(ast_context.release());
     
-    std::string module_name("___clang_module");
+    std::string module_name("$__lldb_module");
 
     m_code_generator.reset(CreateLLVMCodeGen(m_compiler->getDiagnostics(),
                                              module_name,