Fix rebuilding of emsdk

Makefile

@@ -161,7 +161,7 @@ root/.built: \
 	touch root/.built
 
 
-$(CPYTHONLIB): emsdk/emsdk/emsdk/.complete
+$(CPYTHONLIB): emsdk/emsdk/.complete
 	make -C $(CPYTHONROOT)
 
 
@@ -173,5 +173,5 @@ build/packages.json: $(CPYTHONLIB)
 	make -C packages
 
 
-emsdk/emsdk/emsdk/.complete:
+emsdk/emsdk/.complete:
 	make -C emsdk

emsdk/Makefile

-all: emsdk/emsdk/.complete
+all: emsdk/.complete
 
 # We hack the CPU_CORES, because if you use all of the cores on Circle-CI, you
 # run out of memory
 
-emsdk/emsdk/.complete:
+emsdk/.complete:
 	if [ -d emsdk ]; then rm -rf emsdk; fi
 	git clone https://github.com/juj/emsdk.git
 	sed -i -e "s#CPU_CORES = max(multiprocessing.cpu_count()-1, 1)#CPU_CORES = 3#g" emsdk/emsdk