crypto/gc-rijndael: Fix recent regression. * modules/crypto/gc-rijndael (Files): Remove m4/rijndael.m4. (configure.ac): Invoke AC_LIBOBJ here. * m4/gc-rijndael.m4 (gl_GC_RIJNDAEL): Don't invoke gl_RIJNDAEL. Reported by Tom G. Christensen <tgc@jupiterrise.com>.