Revert "remove a pair of obsolete make targets"

This reverts commit d33d61d5029d03ceb20e37a7930d694e04bcf720.

bin/kaleidoscope-builder

@@ -466,6 +466,26 @@ find_all_sketches () {
     done | sort
 }
 
+build_all () {
+    plugins="$(find_all_sketches)"
+
+    for plugin in ${plugins}; do
+        export SKETCH="${plugin}"
+        $0 "${plugin}" build
+    done
+}
+
+
+compile_all () {
+    plugins="$(find_all_sketches)"
+
+    for plugin in ${plugins}; do
+        export SKETCH="${plugin}"
+        $0 "${plugin}" compile
+    done
+}
+
+
 size () {
     compile