Add more info to version.m and store build info in the binary (bug #45659) * build-info.in.cc, build-info.h: New files. * mk-build-info-h.in.sh: New script. * configure.ac, Makefile.am: Update. * module.mk (update_hg_id, libinterp/build-info.cc): New rules. * version.m: Also return release date. Add input argument. * toplev.cc (F__octave_config_info__): New fields, builddate, buildtime, hgid, releasedate.

--- a/configure.ac	Sat Apr 09 06:36:53 2016 +0200
+++ b/configure.ac	Fri Apr 08 21:41:18 2016 +0200
@@ -3399,6 +3399,7 @@
   build-aux/mk-f77-def.sh
   build-aux/mk-mxarray-h.sh
   build-aux/mk-version-h.sh
+  build-aux/mk-build-info-cc.sh
   build-aux/subst-config-vals.sh
   build-aux/subst-cross-config-vals.sh
   build-aux/subst-default-vals.sh