Fix an editing blunder which broke incremental builds, and add removal of the...

Fix an editing blunder which broke incremental builds, and add removal of the build dir to the clean target in the toplevel Makefile.

Makefile

@@ -66,6 +66,7 @@ clean:
 	cd Gem/src/ && rm -rf ./.libs && rm -rf ./*/.libs
 	cd Gem/ && test -f Makefile && make distclean || true
 	cd Gem/ && rm -f gemglutwindow.pd_linux Gem.pd_linux
+	rm -rf packages/*/build/
 
 realclean:
 # This requires a working copy of the git repo.

l2ork_addons/tar_em_up.sh

@@ -299,8 +299,8 @@ then
 		cp ../../pd/src/m_pd.h ../../externals/build/include
 		cp ../../pd/src/s_stuff.h ../../externals/build/include
 		cp ../../pd/src/g_all_guis.h ../../externals/build/include
+		rm -rf build/
 	fi
-	rm -rf build/
 	if [ $rpi -eq 0 ]
 	then
 		echo "installing desktop version..."