Makefile: Add a make fast command for development

This excludes dselect, po, and doc.

Makefile

@@ -9,7 +9,7 @@ endif
 .PHONY: default
 default: startup all
 
-.PHONY: headers library clean veryclean all binary program doc test update-po
+.PHONY: fast headers library clean veryclean all binary program doc test update-po
 all headers library clean veryclean binary program doc manpages docbook test update-po startup dirs:
 	$(MAKE) -C vendor $@
 	$(MAKE) -C apt-pkg $@
@@ -23,6 +23,16 @@ all headers library clean veryclean binary program doc manpages docbook test upd
 	$(MAKE) -C po $@
 	$(MAKE) -C test $@
 
+fast:
+	$(MAKE) -C vendor all
+	$(MAKE) -C apt-pkg all
+	$(MAKE) -C apt-inst all
+	$(MAKE) -C apt-private all
+	$(MAKE) -C methods all
+	$(MAKE) -C cmdline all
+	$(MAKE) -C ftparchive all
+	$(MAKE) -C test all
+
 all headers library clean veryclean binary program doc manpages docbook test update-po: startup dirs
 
 dirs: startup