Corrected JDKDIR path

Signed-off-by: Gergely Pilisi <gergely.pilisi@ericsson.com>

Makefile.cfg

@@ -67,7 +67,7 @@ JNI := yes
 
 # Path of the Java Developement Kit installation
 # (must be at least version  1.5.0_10)
-JDKDIR := /mnt/TTCN/Tools/jdk1.5.0_11
+JDKDIR := /usr/lib/jvm/default-java
 
 # Path of OpenSSL installation: (always required)
 OPENSSL_DIR := default