RFR:8055033: Shell tests for jrunscript don't pass through VM options

[Srinivas Dama]

Hi,

Please review http://cr.openjdk.java.net/~sdama/8055033/webrev.00/ 
for https://bugs.openjdk.java.net/browse/JDK-8055033 

When launching java and javac from shell script, ${TESTVMOPTS}, ${TESTJAVAOPTS} and ${TESTTOOLVMOPTS}, ${TESTJAVACOPTS} should be 
passed in respectively since jtreg sets these environment variables.

Regards,
Srinivas