reorganize octave_config_info again * build-env-features.sh: Don't include ENABLE_ items in the output. * toplev.cc (find_config_info): New static function. (Foctave_config_info): Put Octave configuration info in the main struct. Put the build system features and build environment info in substructures. Allow searching of all elements by keyword. * __have_feature__.m, doc/interpreter/testfun.txi: Fix name of build features substructure element. * geometryimages.m, interpimages.m, plotimages.m, sparseimages.m, splineimages.m: Use __have_feature__ to check for OSMESA.

--- a/libinterp/build-env-features.sh	Mon Feb 08 17:34:12 2016 -0500
+++ b/libinterp/build-env-features.sh	Mon Feb 08 23:14:56 2016 -0500
@@ -35,11 +35,11 @@
 EOF
 
 $AWK \
-  '/#define (HAVE|ENABLE)_/ {
+  '/#define HAVE_/ {
      sub (/HAVE_/, "", $2);
      printf ("          m.assign (\"%s\", octave_value (true));\n", $2);
    }
-   /\/\* #undef (HAVE|ENABLE)_/ {
+   /\/\* #undef HAVE_/ {
      sub (/HAVE_/, "", $3);
      printf ("          m.assign (\"%s\", octave_value (false));\n", $3);
    } {