Jigsaw javac testing progress

[Jonathan Gibbons]

In addition to the standard classpath and sourcepath, javac now accepts 
-modulepath and -L  as options giving places to locate modules to be 
used in a compilation.

It turns out there are 52 interesting combinations of -classpath, 
-sourcepath, -modulepath and -L where each of the *path options may be 
unused or  used to locate classes in the current "module" and/or other 
modules. (where "module" is in quotes because some of the cases just 
involve package/class hierarchies, not modules.)

And all 52 cases work :-)

-- Jon