* sysdep.c: Include conio.h if __MINGW32__ and !OLD_MINGW.
* ctrl_c.c (__gnat_int_handler): Remove declaration.
* decl.c (creat_concat_name): Const-ify prefix.
* adaint.c: Include ctype.h if __MINGW32__.
(__gnat_readlink): Mark arguments as possibly unused.
(__gnat_symlink): Likewise.
(__gnat_is_symbolic_link): Likewise.
(__gnat_portable_spawn): Likewise. Cast last arg of spawnvp to match
declaration
(__gnat_file_time_name): Don't declare struct stat statbuf when
not needed.
(__gnat_is_absolute_path): Add parenthesis around condition of
'if' statement to avoid warning.
(__gnat_plist_init): Specify void as parameter.
(plist_enter): Likewise.
(plist_leave): Likewise.
(remove_handle): Make static. Initialize prev.
From-SVN: r72824
