Update libprj Linux Makefile for new paths.

Change-Id: I78ef605e7efa361d77f2b2cc37feecc9b8c6c38a
diff --git a/libprj/Makefile b/libprj/Makefile
index c844065..2aa1d58 100644
--- a/libprj/Makefile
+++ b/libprj/Makefile
@@ -56,7 +56,7 @@
 
 all: ../config.h $(LIBRARY)
 
-include ../../../source/common.mak
+include ../../../jumper/source/common.mak
 
 
 #