source code re-organization

[Michael McMahon]

Hi,

The webrev below contains a utility which re-organizes the jdk8 source 
code into one possible
modularized layout suitable for jigsaw. The way it works is that first a 
meta script called 'makeshufflescripts'
is run which looks at the current layout and generates two further sets 
of scripts (so-called 'shuffle' and
'unshuffle' scripts). These scripts contain a set of 'rsync' commands 
that copy changed files between the old
and the new layouts. 'shuffle' copies from the old to the new, and 
'unshuffle' copies any modified files
from the new layout back to the old/present jdk source layout. The 
script operates on the jdk, langtools
corba, jaxws and jaxp repositories copying from the 'src' sub-tree in 
each to/from a 'newsrc' sub-tree
containing the new layout.

The purpose of the utility is for people to experiment with the new 
layout, editing source files etc.
Changed files can be 'unshuffled' back to the old layout, for building. 
There is a README which explains
how exactly to use it. Currently, it has only been tested on Linux.

http://cr.openjdk.java.net/~michaelm/shuffle/1/webrev/

As mentioned above, the main script in the utility is 
'makeshufflescripts'. Most of the other files
in the webrev contain other information needed by the script. 
'makeshufflescripts' generates the shuffle/unshuffle
scripts into a directory called shufflescripts off the root of the 
jigsaw forest.
To do a shuffle, execute "sh shufflescripts/shuffle.sh" and to do an 
unshuffle "sh shufflescripts/unshuffle.sh"

All comments/questions welcome.

- Michael.