[libvirt] [0/17] patches: mingw, gnulib, warnings, misc

Last week, I set out simply to adjust libvirt to accommodate a recent gnulib API change, whereby you now include the standard <netdb.h> rather than the gnulib-made-up "getaddrinfo.h" header file. That meant pulling in many gnulib updates (a lot's been happening on the mingw portability front recently), and there's been some churn, so I'd pull in an update, find that it exposes more portability problems, fix them, (but that may have also added a new warning, so fix that), pull in another update, find more, etc. Most of this has been mingw-specific, but I addressed some of the test-related warnings by removing ifdefs so that the same code is compiled in both mingw and non-mingw cases. I think we've settled on a local fixed point, with the result triggering only the two XDR warnings I already wrote about. This patch series includes all of the above (leaving out 10K lines of automatically-pulled-from-gnulib diffs) and cleans up the state of .cvsignore and .gitignore files: 1 exempt gnulib from ctype-macros prohibition 2 exempt gnulib from write-avoidance syntax check 3 use ARRAY_CARDINALITY more 4 * src/network_conf.c: Include <string.h> for declaration of memcmp. 5 adapt to API change in gnulib 6 use more gnulib modules 7 updates from gnulib (this is the 10K-line diff -- mostly omitted) 8 socketcompat.h: simplify, to match latest gnulib 9 use errno, not socket_errno() 10 remove duplicate inclusion of "remote_protocol.h" (before <config.h>!) 11 * src/remote_internal.c (remoteFindDaemonPath) [!WIN32]: Don't compile. 12 include netinet etc #ifndef HAVE_WINSOCK2_H 13 * qemud/remote_protocol.x: Include "remote_protocol.h" and <rpc/xdr.h>. 14 * remote_protocol.c, remote_protocol.h: regenerate 15 cvsignore mingw build artifacts: *.exe 16 avoid many mingw-specific warnings 17 avoid compiler warning when all storage backends are disabled