gethrxtime: Move AC_LIBOBJ invocations to module description. * m4/gethrxtime.m4 (gl_PREREQ_GETHRXTIME): Move code that determines LIB_GETHRXTIME from here... (gl_GETHRXTIME): ... to here. Move AC_LIBOBJ and gl_PREREQ_GETHRXTIME invocations from here... * modules/gethrxtime (configure.ac): ... to here.