[libvirt] [PATCH] build: import latest gnulib

maint.mk: check for [ as well as test gnumakefile: don't squelch _version output sys_time: avoid compiler warnings maint.mk: split a long line maint.mk: s/_header_without_use/_sc_header_without_use/ maint: improve module indicators fdopendir: work around FreeBSD bug Emit #pragma system_header after the inclusion guard, not before. Fix indentation. save-cwd: don't leak a file descriptor when the caller execs Remove vestiges of fts-lgpl module. Fix definition of tests witness macro. Fix definition of tests witness macro. Fix ioctl's protoype on glibc systems. Normalize copyright line formatting. exclude: fix the case of globs vs. EXCLUDE_INCLUDE maint.mk: prohibit use of test's -o and -a operators Remove unused GNULIB_XYZ macro definitions. Mark privileged tests modules. Split C++ tests into separate tests modules. gnulib-tool: Allow 'foo-tests' module even if there is no module 'foo'. gnulib-tool: Add support for special categories of tests. ansi-c++-opt: Allow turning off the C++ build by default. unistd: Avoid #define replacements in C++ mode. Fix link errors on mingw. lib-ignore: Determine different options for different compilers. Remove unused GNULIB_XYZ macro definitions. Add a remark about certain modules. Resolve conflict between the two kinds of module indicators. autoupdate Distinguish two kinds of module indicators. New module description field 'Comment'. Addendum to 2010-02-07 commit. Use GNULIB_POSIXCHECK instead of GNULIB_PORTCHECK. Avoid side effects from tests-related modules on the compilation of lib. Factorize common .m4 code. Fix a compilation error on Cygwin with g++ >= 4.3. Rename gl_GETLOGIN. Rename gl_GETLOGIN_R. Rename gl_INET_NTOP. Rename gl_INET_PTON. Rename gl_MBSLEN. Rename gl_FORKPTY and gl_OPENPTY. top/maint.mk (sc_texinfo_acronym): Don't infloop if there is no *.texi files.