Fix a problem identified by Art Haas <ahaas@airmail.net>.  POSIX doesn't require 'head -1' and recent GNU coreutils no longer support it by default.  Crazy!
Fix a problem identified by Art Haas <ahaas@airmail.net>.  POSIX
doesn't require 'head -1' and recent GNU coreutils no longer support
it by default.  Crazy!

* build/buildcheck.sh: Use 'sed 1q' in place of 'head -1', an idea
  taken from GCC.

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