* s-winext.ads: Replace representation clause by pragma Pack. Gives
equivalent representation, but has the advantage of allowing
compilation of this file under 64 bits platforms.
* s-os_lib.adb (Normalize_Pathname): Mark Cur_Dir constant.
* s-osinte-irix.ads: (Alternate_Stack_Size): Add dummy declaration.
* adaint.c:
Don't define dummy implementation of convert_addresses on ppc-linux.
From-SVN: r135649
