Request for phase 2 approval for CR 7068451 - Regression: javac compiles fixed sources against previous, not current, version of generated sources

[Jim Holmlund]

The bug:
	http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7068451

The changeset is the same as in JDK 8:
	http://hg.openjdk.java.net/jdk8/jdk8/langtools/rev/edd7d9bd32dd

The target repo:
	http://hg.openjdk.java.net/jdk7u/jdk7u2-dev-gate/langtools/

This is a regression from JDK 6 that can occur when an annotation processor modifies a .java file 
that is to be used in a compilation.
The bug is that the previous version of the file is used instead of the new version.

This creates unfathomable problems for users of the tools that use the javac annotation processing 
API, such as NetBeans, and I suppose other IDEs.

Risks:
	No special risks, other than the usual risks associated with a change.
	Given the nature of the change and the amount of testing shown below,
         the risk seems minimal.

Testing:
- langtools regression tests pass as expected
- JCK-Compiler-7 tests pass as expected
- This change was pushed to jdk8/tl/langtools on Sept 12 - it is in JDK8 B07.
   It has been thru many nightly tests since then, and three promotion testings.
- Netbeans has verified that this fix in JDK 8 fixes their problem.

Author:  Jon Gibbons
Reviewed by:  Maurizio Cimadamore , Jim Holmlund