update from gnulib

update from gnulib

* build-aux/mktempd (rand_bytes, mktempd):
* build-aux/useless-if-before-free (FILE):
* build-aux/vc-list-files:
* gnulib/lib/.cvsignore:
* gnulib/lib/Makefile.am:
* gnulib/lib/poll.c (poll):
* gnulib/lib/stdbool.in.h (_GL_STDBOOL_H, true):
* gnulib/lib/stdio-impl.h (fp_, fp_ub):
* gnulib/lib/stdio.in.h (vasprintf, obstack_printf)
(obstack_vprintf):
* gnulib/lib/vasnprintf.c (_GNU_SOURCE, sprintf, IF_LINT, exp)
(remainder, scale10_round_decimal_long_double)
(scale10_round_decimal_double, pad_ourselves):
* gnulib/m4/gnulib-cache.m4:
* gnulib/m4/gnulib-common.m4 (gl_MODULE_INDICATOR):
* gnulib/m4/gnulib-tool.m4 (gl_LOCAL_DIR, gl_M4_BASE, gl_PO_BASE)
(gl_DOC_BASE, gl_TESTS_BASE, gl_WITH_TESTS, gl_LIB, gl_LGPL)
(gl_MAKEFILE_NAME, gl_MACRO_PREFIX, gl_PO_DOMAIN, gl_VC_FILES):
* gnulib/m4/lock.m4 (gl_LOCK_EARLY_BODY, gl_PREREQ_LOCK)
(gl_DISABLE_THREADS):
* gnulib/m4/onceonly.m4:
* gnulib/m4/posix-shell.m4 (gl_POSIX_SHELL):
* gnulib/m4/stdio_h.m4 (gl_STDIO_H_DEFAULTS):
* gnulib/tests/test-getaddrinfo.c (ENABLE_DEBUGGING, dbgprintf)
(simple):
* gnulib/tests/test-stdint.c (UINTMAX_MAX, or):
* gnulib/tests/test-vc-list-files-cvs.sh (compare):
* gnulib/tests/test-vc-list-files-git.sh (compare):