Bug 864646 - get rid nsARIAMap struct, r=tbsaunde

--HG--
rename : accessible/src/base/nsARIAMap.cpp => accessible/src/base/ARIAMap.cpp
rename : accessible/src/base/nsARIAMap.h => accessible/src/base/ARIAMap.h
Bug 865396: Insert space between string literal and macro arg, to fix GCC 4.8 Wliteral-suffix build warning. r=sfink