Added runtime.prefix to jvmconfig.properties

Author: donaldh

tools/build/gen-jvm-properties.pl

@@ -25,6 +25,7 @@
 print <<"END";
 # This file automatically generated by $0
 
+runtime.prefix=${prefix}
 runtime.bootclasspath=-Xbootclasspath/a:.${cpsep}${thirdPartyJars}
 runtime.classpath=${libdir}
 runtime.jars=${thirdPartyJars}