BUGFIX: lists cannot be llvm_va_copy was broken, didn't copy list offset
IMPROVED: va_list offset is not hardcoded, added comments
ADDED: test to ensure va_lists work properly when copied, reinitialized etc.
CHANGED: added myself to AUTHORS
CHANGED: using spaces instead of tabs to match project codestyle
CHANGED: using spaces instead of tabs to match project codestyle
Merge pull request #1301 from Manny-MADE/va_lists_fix

BUGFIX: lists cannot be copied as "llvm_va_copy" was broken, didn't copy list offset