stat: work around Solaris bug with tv_nsec < 0 * doc/posix-functions/fstat.texi (fstat): * doc/posix-functions/fstatat.texi (fstatat): * doc/posix-functions/lstat.texi (lstat): * doc/posix-functions/stat.texi (stat): Mention Solaris 11 bug. * lib/fstat.c, lib/fstatat.c, lib/lstat.c: Include stat-time.h. * lib/fstat.c (rpl_fstat) [!WINDOWS_NATIVE]: * lib/lstat.c (rpl_lstat): * lib/stat.c (rpl_stat): Normalize resulting timestamps. * lib/fstatat.c (normal_fstatat): New function. (rpl_fstatat): Use it. * lib/stat-time.h: Include intprops.h, errno.h, stddef.h. (stat_time_normalize): New function. * m4/fstat.m4 (gl_FUNC_FSTAT): * m4/fstatat.m4 (gl_FUNC_FSTATAT): * m4/lstat.m4 (gl_FUNC_LSTAT): * m4/stat.m4 (gl_FUNC_STAT): Replace on Solaris. * modules/fstat (Depends-on): * modules/fstatat (Depends-on): Add stat-time. * modules/stat-time (Depends-on): Add errno, intprops.