Heads-up: jigsaw sync with JDK 7 b130

[Mandy Chung]

  I finish sync'ing up jigsaw with JDK 7 b130 (Milestone 12) and will be 
pushing the changesets to the jigsaw repository tomorrow or over the 
weekend (I'm currently waiting for my jprt testing job to finish).

These 2 webrevs show the files that require manual merges:
   http://cr.openjdk.java.net/~mchung/jigsaw/webrevs/b130-merge/langtools/
   http://cr.openjdk.java.net/~mchung/jigsaw/webrevs/b130-merge/jdk/

Here are a few fixes worth mentioning:
o Fix CacheFSInfo 
<http://cr.openjdk.java.net/%7Emchung/jigsaw/webrevs/b130-merge/langtools/src/share/classes/com/sun/tools/javac/file/CacheFSInfo.java.udiff.html> 
for 7018098 "CacheFSInfo persists too long" found during the merge
o Fix NPE thrown by org.openjdk.jigsaw.Loader 
<http://cr.openjdk.java.net/%7Emchung/jigsaw/webrevs/b130-merge/jdk/src/share/classes/org/openjdk/jigsaw/Loader.java.udiff.html> 
when a class is not found while mid == 0
o Also made corresponding change per NIO 2 spec update.

Mandy