Makefile for concurrent builds.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@1796 dfc29bdd-3216-0410-991c-e03cc46cb475

examples/Makefile

+DIRS = $(wildcard [01]* Demo)
+
+all: $(DIRS)
+
+$(DIRS):
+	-@cd $@ && make clean && make
+
+.PHONY: $(DIRS)

examples/buildAllExamples.sh

@@ -3,7 +3,6 @@
 [ -z $TARGET ] && TARGET=all
 for i in [01]* Demo; do
   echo "Building $i";
-  cd $i;
-  make clean $TARGET;
-  cd ..;
+  pushd $i && make clean $TARGET;
+  popd;
 done