Update.
* stdio-common/temptest.c: Include <stdlib.h>.
* stdio-common/tst-fileno.c: Likewise.
* stdio-common/scanf4.c: Likewise.
* stdio-common/scanf5.c: Likewise.
* time/clocktest.c: Likewise.
* posix/test-vfork.c: Likewise.
* posix/globtest.c: Likewise.
* io/test-utime.c: Likewise.
* wctype/test_wcfuncs.c: Likewise.
* crypt/cert.c: Likewise.
* stdio-common/tst-printfsz.c: Include <string.h>.
* libio/tst_swscanf.c: Likewise.
* libio/tst_wscanf.c: Likewise.
* posix/runtests.c: Likewise.
* posix/tst-getaddrinfo.c: Likewise.
* posix/wordexp-test.c: Likewise.
* misc/tst-efgcvt.c: Likewise.
* stdlib/tst-xpg-basename.c: Include <stdlib.h> and <string.h>.
* nss/test-netdb.c: Likewise.
* sysdeps/unix/sysv/linux/configure.in: Add check for minimal
supported kernel for MIPS.