JDK 8 RFR: JDK-8024603 Turn on javac lint checking for auxiliaryclass, empty, and try in jdk build

[Joe Darcy]

Hello,

As a follow-up to  JDK-8024643 "Turn on javac lint checking in building 
the jdk repo", the time approaches to enable a few more lint warnings in 
the build of the jdk repo:

     JDK-8024603 Turn on javac lint checking for auxiliaryclass and 
empty in jdk build
     http://cr.openjdk.java.net/~darcy/8024603.0/

The webrev above and patch below adds the "auxiliaryclass", "empty", and 
"try" categories:

--- old/makefiles/Setup.gmk    2013-10-01 15:53:23.000000000 -0700
+++ new/makefiles/Setup.gmk    2013-10-01 15:53:23.000000000 -0700
@@ -27,7 +27,7 @@

  # To build with all warnings enabled, do the following:
  # make JAVAC_WARNINGS="-Xlint:all -Xmaxwarns 10000"
-JAVAC_WARNINGS:=-Xlint:-unchecked,-deprecation,-overrides,classfile,dep-ann,divzero,varargs 
-Werror
+JAVAC_WARNINGS:=-Xlint:-unchecked,-deprecation,-overrides,auxiliaryclass,classfile,dep-ann,divzero,empty,try,varargs 
-Werror

  # The generate old bytecode javac setup uses the new compiler to 
compile for the
  # boot jdk to generate tools that need to be run with the boot jdk.

The bugs blocking these categories are fixed or out for review.

Please review the change; it would only be pushed on a successful full 
jprt run.

Thanks,

-Joe