Adding Address Sanitizer build
Adding debug and clang targets, changing asan target
Update for doxygen.cfg: adding ast.* and func.* and fixing builtins-c.c => builtins/builtins.c
Merge pull request #432 from dbabokin/master

Some minor changes in Makefile and doxygen.cfg
One more missing file in doxygen.cfg: cbackend.cpp
Fix for #433: fix for ToT changes, removal of llvm::createGCInfoDeleter()
Merge pull request #434 from dbabokin/master

Fix for #433
Reading the LLVM lists makes me concur.  The functionality (if it was even needed) was merged into other existing infrastructure.
Tracking ToT changes in DIBuilder interface
Fix for issue #430
Merge pull request #435 from dbabokin/master

Tracking ToT changes in DIBuilder interface
Fix for some typos in User's Guide
Doxygen fix: don't identify the word Declaration as a class
Merge pull request #437 from dbabokin/docs

Docs