* build/buildcheck.sh: Allow libtool 1.5 to pass buildcheck.sh and use head -1 (like we do for autoconf and autoheader) to just get the first line of output.
* build/buildcheck.sh: Allow libtool 1.5 to pass buildcheck.sh and use head -1
(like we do for autoconf and autoheader) to just get the first line of output.

This could be slightly optimized to avoid setting lt_status to 'good' when
we are greater than the minor, but the way I'd do it would affect the
readability of this fragment, and it is not worth it.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion