Also filter some well-known files created by C/C++ build systems

GNU Autotools often creates files called .lo, .Plo. C/C++ compilers
create object files ending with .o, and shared objects ending in .so,
as well as static libraries ending with .a.

snapopen/__init__.py

@@ -159,9 +159,10 @@ def on_snapopen_action( self ):
 
         # cache the file list in the background
         #modify lines below as needed, these defaults work pretty well
-        imagefilter = " ! -iname '*.jpg' ! -iname '*.jpeg' ! -iname '*.gif' ! -iname '*.png' ! -iname '*.psd' ! -iname '*.tif' ! -iname '*.pyc' "
+        imagefilter = " ! -iname '*.jpg' ! -iname '*.jpeg' ! -iname '*.gif' ! -iname '*.png' ! -iname '*.psd' ! -iname '*.tif' "
         dirfilter = " ! -path '*.svn*' ! -path '*.git*' "
-        os.popen("cd %s; find . -type f %s > %s 2> /dev/null &" % (self._rootdir.replace("file://", ""), imagefilter + dirfilter, self._tmpfile))
+        binfilter = " ! -iname '*.o' ! -iname '*.so' ! -iname '*.lo' ! -iname '*.Plo' ! -iname '*.a' ! -iname '*.pyc' "
+        os.popen("cd %s; find . -type f %s > %s 2> /dev/null &" % (self._rootdir.replace("file://", ""), imagefilter + dirfilter + binfilter, self._tmpfile))
 
         self._snapopen_window.show()
         self._glade_entry_name.select_region(0,-1)