propagate octave_execution_exception objects through try/catch blocks * gripes.h, gripes.cc (gripe_user_supplied_eval, gripe_wrong_type_arg): New overloaded functions that accept octave_execution_exception objects. * error.h, error.cc (error, verror, error_1, usage_1, debug_or_throw_exception): New overloaded functions that accept * octave_execution_exception objects. * __qp__.cc, cellfun.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc, file-io.cc, graphics.cc, graphics.in.h, input.cc, load-path.cc, ls-mat-ascii.cc, lsode.cc, mex.cc, oct-handle.h, oct-map.cc, oct-stream.cc, quad.cc, rand.cc, toplev.cc, utils.cc, variables.cc, __eigs__.cc, ov-base.cc, ov-class.cc, ov-fcn-handle.cc, ov-oncleanup.cc, ov.cc, octave.cc, oct-parse.in.yy: Propagate octave_execution_exception objects through try/catch blocks.

--- a/libinterp/octave-value/ov-class.cc	Wed Nov 25 11:32:28 2015 -0800
+++ b/libinterp/octave-value/ov-class.cc	Wed Nov 25 15:27:48 2015 -0500
@@ -1106,6 +1106,8 @@
             }
           catch (const octave_execution_exception&)
             {
+              recover_from_exception ();
+
               execution_error = true;
             }