RFR: JDK-8244247: Build failures after sjavac cleanup

[Tim Bell]

Erik:

Looks good.

Tim

> After the sjavac cleanup in JDK-8244036 (and the subsequent fix of the 
> javac server usage in JDK-8244210), two more build failures have been 
> noted. The bootcycle build fails and the test-make target fails the 
> tests of SetupJavaCompilation.
> 
> The bootcycle build fails because a space has crept into the variable 
> SJAVAC_SERVER_DIR when it's overridden in bootcycle-spec.gmk.in This 
> space splits the sjavac server argument.
> 
> The tests for make just need to be updated to use the new TARGET_RELEASE 
> arg instead of the old SetupJavaCompiler construct.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8244247
> 
> Webrev: http://cr.openjdk.java.net/~erikj/8244247/webrev.01/index.html
> 
> /Erik
>