Need reviewer - jdk7 jdwpgen, added netbeans project, fixed findbugs errors

[Kelly O'Hair]

Still need reviewer ...

  6853636: Fix warnings in jdwpgen, add jdwpgen NetBeans project

  http://cr.openjdk.java.net/~ohair/openjdk7/jdk7-build-jdwpgen-6853636/webrev/

Pretty harmless code cleanup on the tool used to generate
some of the JDWP code for the debugger.

-kto