Minimized Scalax IO branch

All,


I've started making the minimized scalax I/O branch on github.  This should only contain classes need to compile the I/O portions of scalax.  This is the first step towards making a releasable I/O library.  The branch is called "minimize".



Also, I've set up with the latest SBT project definitions so we can cross-build the library against scala versions 2.7.2, 2.7.3, 2.7.4 and 2.7.5 simulataneously.  Once I get approval, you'll see snapshots show up on scala-tools.org.


- Josh