grc: added logic to discover the path to the python interpreter
Rather than simply exec-ing the application w/ "python",use the same interpreter that executed grc w/ full path.
Added code to handle the following exceptions:- for a wx app on mac osx, use the pythonw interpreter...
removed unused import statements, thanks pyflakes
this time commit the file changes
apply diff from previous commits
Merging r11186:11273 from grc branch.Fixes, features, and reorganization for grc.Minor fixes and features for wxgui forms.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@11274 221aa14e-8319-0410-a670-987f0aec2ac5