RFR(M): 8069035: compiler/oracle/CheckCompileCommandOption.java nightly failure

[Nils Eliasson]

Hi,

Please review this change. The push of JDK-8027829 caused a nightly 
failure. The fix for allowing the signature to follow the method without 
a whitespace wasn't complete and broke the option parsing.

This change includes these fixes:
* Fixing the removal of whitespace in option command parsing
* Adding the test to TEST.groups (~7s test time on a fast machine)
* Added additional test cases for the CompilerCommandFile
* Added testcases for option parsing together with a method pattern that 
includes a signature
* Moved some testcases together that didn't require separate VMs

Bug: https://bugs.openjdk.java.net/browse/JDK-8069035
Webrev: http://cr.openjdk.java.net/~neliasso/8069035/webrev.01

Best regards,
Nils Eliasson