Remove -ansi flag for packages which don't build.

-ansi (and __STRICT_ANSI__) prevent the bionic headers to define (u)int64_t

Freetype exhibits a bug in gcc headers which typedef uint64_t u_int64_t

It seems like gcc, libebml, libmatroska, and taglib rely on standard headers
to define (u)int64_t which is the case for glibc even with -ansi.