Linux only addition to know for sure the path of blender because sometimes the Play button doesn't work depending on how blender is started.

This uses binreloc - http://autopackage.org/docs/binreloc/
it should also solve the problem of python scripts not being found.

extern/SConscript

@@ -16,3 +16,6 @@ if env['WITH_BF_VERSE']:
 
 if env['WITH_BF_FFMPEG'] and env['BF_FFMPEG_LIB'] == '':
     SConscript(['ffmpeg/SConscript']);
+
+if env['OURPLATFORM'] == 'linux2':
+    SConscript(['binreloc/SConscript']);