Thunderbird doesn't care about satchel, autocomplete, session history, etc. So don't build them.

We may move this stuff to browser or add flags to the build to make it easy to skip them.

toolkit/components/Makefile.in

@@ -5,6 +5,11 @@ VPATH   = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
+ifdef MOZ_THUNDERBIRD
+DIRS = console
+else
 DIRS = autocomplete console filepicker history satchel viewsource build
+endif
+
 
 include $(topsrcdir)/config/rules.mk