Re: [libvirt] [PATCHv2] build: fix example build on MacOS X

Partial reversion of commit 76d87a59, now that bootstrap is smarter. * .gnulib: Update to latest, for poll and bootstrap fixes. * bootstrap: Resync from gnulib. * autogen.sh: Drop redundant tool checks; bootstrap does them better, by honoring environment variables. * examples/domain-events/events-c/Makefile.am (INCLUDES) (event_test_LDADD): Use gnulib library during build. * bootstrap.conf (gnulib_tool_option_extras): Revert --libtool addition, now that updated bootstrap does it for us. Reported by Justin Clift. --- Change in v2: actually commit the changes to examples that were mentioned in the commit message.