Quick Compiler function renaming

Move the Quick compiler's function naming to Art coding conventions. Will
be done is pieces: names first, then arguments and locals.  Also removed
some dead code and marked statics for the top level source files

No logic changes aside from eliminating a few useless exported "oat"
routines.

Change-Id: Iadaddc560942a0fc1199ba5b1c261cd6ac5cfd9a
diff --git a/src/compiler/frontend.h b/src/compiler/frontend.h
index 702d5d4..1898b9b 100644
--- a/src/compiler/frontend.h
+++ b/src/compiler/frontend.h
@@ -136,8 +136,8 @@
 struct CompilationUnit;
 struct BasicBlock;
 
-BasicBlock* oatFindBlock(CompilationUnit* cUnit, unsigned int codeOffset);
-void oatReplaceSpecialChars(std::string& str);
+BasicBlock* FindBlock(CompilationUnit* cUnit, unsigned int codeOffset);
+void ReplaceSpecialChars(std::string& str);
 
 }  // namespace art