building appcheck requires C99

[Matt Wilson <msw@redhat.com>]

since lldiv is a part of the C99 spec, current glibc only defines it
if running in a C99 environment.  I have to build inttypes_h.c as:

gcc -std=iso9899:1999 -c -o inttypes_h.o inttypes_h.c

Cheers,

Matt