Merge from gnulib to make "#define unix" unnecessary, incorporating: 2012-07-10 getloadavg: clean out old Emacs and Autoconf cruft 2012-07-09 getopt: Simplify after Emacs changed. * src/s/aix4-2.h (unix): Remove; no longer needed.
Fixes: debbugs:11527
* configure, lib/getloadavg.c, m4/getloadavg.m4: Regenerate.