Add a test to check node device XML parsing by first parsing
the XML, then re-formatting as XML and finally comparing the
resulting XML to the original XML.

* bootstrap (modules): Add time_r.
* gnulib/m4/time_h.m4: New file.
* gnulib/m4/time_r.m4: New file.
* gnulib/lib/time_r.c: New file.
* gnulib/tests/test-time.c: New file.
* gnulib/lib/time.in.h: New file.
* gnulib/lib/Makefile.am: Update.
* gnulib/lib/fseeko.c: Likewise.
* gnulib/lib/lstat.c: Likewise.
* gnulib/lib/netdb.in.h: Likewise.
* gnulib/lib/stdint.in.h: Likewise.
* gnulib/lib/stdlib.in.h: Likewise.
* gnulib/lib/sys_select.in.h: Likewise.
* gnulib/lib/sys_stat.in.h: Likewise.
* gnulib/lib/sys_time.in.h: Likewise.
* gnulib/lib/unistd.in.h: Likewise.
* gnulib/lib/wchar.in.h: Likewise.
* gnulib/m4/codeset.m4: Likewise.
* gnulib/m4/errno_h.m4: Likewise.
* gnulib/m4/extensions.m4: Likewise.
* gnulib/m4/getaddrinfo.m4: Likewise.
* gnulib/m4/gettext.m4: Likewise.
* gnulib/m4/glibc2.m4: Likewise.
* gnulib/m4/glibc21.m4: Likewise.
* gnulib/m4/gnulib-cache.m4: Likewise.
* gnulib/m4/gnulib-comp.m4: Likewise.
* gnulib/m4/iconv.m4: Likewise.
* gnulib/m4/include_next.m4: Likewise.
* gnulib/m4/intdiv0.m4: Likewise.
* gnulib/m4/intlmacosx.m4: Likewise.
* gnulib/m4/intmax.m4: Likewise.
* gnulib/m4/inttypes-pri.m4: Likewise.
* gnulib/m4/inttypes_h.m4: Likewise.
* gnulib/m4/lcmessage.m4: Likewise.
* gnulib/m4/lib-link.m4: Likewise.
* gnulib/m4/lstat.m4: Likewise.
* gnulib/m4/netdb_h.m4: Likewise.
* gnulib/m4/nls.m4: Likewise.
* gnulib/m4/po.m4: Likewise.
* gnulib/m4/printf-posix.m4: Likewise.
* gnulib/m4/printf.m4: Likewise.
* gnulib/m4/progtest.m4: Likewise.
* gnulib/m4/size_max.m4: Likewise.
* gnulib/m4/sockets.m4: Likewise.
* gnulib/m4/stdint.m4: Likewise.
* gnulib/m4/stdint_h.m4: Likewise.
* gnulib/m4/sys_ioctl_h.m4: Likewise.
* gnulib/m4/threadlib.m4: Likewise.
* gnulib/m4/uintmax_t.m4: Likewise.
* gnulib/m4/visibility.m4: Likewise.
* gnulib/m4/wchar.m4: Likewise.
* gnulib/m4/wchar_t.m4: Likewise.
* gnulib/m4/wint_t.m4: Likewise.
* gnulib/m4/xsize.m4: Likewise.
* gnulib/tests/Makefile.am: Likewise.
* gnulib/tests/sockets.h: Likewise.
* gnulib/tests/.cvsignore: Likewise.
* gnulib/tests/.gitignore: Likewise.
* tests/.gitignore: Likewise.
* docs/examples/.gitignore: Likewise.
* gnulib/lib/.cvsignore: Likewise.
* gnulib/lib/.gitignore: Likewise.

remove files associated with obsolete strpbrk module
* gnulib/lib/strpbrk.c: Remove file.
* gnulib/m4/strpbrk.m4: Remove file.

* Makefile.maint (sync-vcs-ignore-files): New target.
Prompted by a patch from James Morris.
http://thread.gmane.org/gmane.comp.emulators.libvirt/8619/focus=8773
Add all (now-generated) .gitignore files.
* .gitignore: New file.
* build-aux/.gitignore: New file.
* docs/.gitignore: New file.
* docs/devhelp/.gitignore: New file.
* docs/examples/.gitignore: New file.
* docs/examples/python/.gitignore: New file.
* gnulib/lib/.gitignore: New file.
* gnulib/lib/arpa/.gitignore: New file.
* gnulib/lib/netinet/.gitignore: New file.
* gnulib/lib/sys/.gitignore: New file.
* gnulib/tests/.gitignore: New file.
* include/.gitignore: New file.
* include/libvirt/.gitignore: New file.
* po/.gitignore: New file.
* proxy/.gitignore: New file.
* python/.gitignore: New file.
* python/tests/.gitignore: New file.
* qemud/.gitignore: New file.
* src/.gitignore: New file.
* tests/.gitignore: New file.
* tests/confdata/.gitignore: New file.
* tests/sexpr2xmldata/.gitignore: New file.
* tests/virshdata/.gitignore: New file.
* tests/xencapsdata/.gitignore: New file.
* tests/xmconfigdata/.gitignore: New file.
* tests/xml2sexprdata/.gitignore: New file.

	* src/test.c, src/libvirt.c, src/virterror.c,
	  include/libvirt/virterror.h: Add a VIR_FROM_TEST error class
	  and ensure that test driver errors are from this class.
	  Tidy up the error messages generated by the test driver when
	  user doesn't add a path to the URL and avoid open ("/").