Some warnings on make

[MB]

When I begun "make" I notive some warnings...
These are(not all):
../../libiberty/regex.c: In function `byte_regex_compile':
../../libiberty/regex.c:2726:(and other lines)
warning: integer constant is unsigned in ANSI C, signed with -traditional
../../libiberty/md5.c:405:(and other lines)
warning: integer constant is unsigned in ANSI C, signed with -traditional
These are not all warning which I saw...