Add some Unix-specific files for .gitignore, more to come later

.gitignore

@@ -1,5 +1,10 @@
 # git ignore file
 *.user
+*.o
+*.la
+*.lo
+*.gmo
+*.po~
 plugins/wmpa/wmpa_h.h
 plugins/wmpa/wmpa_i.c
 src/pixmaps/inline_pngs.h