VisAD library update

I have updated the VisAD Library today. The updated .jar files are on the ftp server, as usual.

Changes to the core routines included changes to:

* TextAdapter to supress spurious text output and correct a problem with (Text) types

* DataImpl to modify the signature for Jython's "pow" method to use multiplies for low-order, integer powers. This preserves Units correctly.

* Updates to the TIFF code

* Gridded2DSet and Gridded2DDoubleSet were changed to correctly check for
off-grid values.  This necessitated a change to Stream2D to check for NaN 
values.

* Added Zeiss LSM file support


--
Tom Whittaker (tomw@xxxxxxxxxxxxx)
University of Wisconsin-Madison
Space Science and Engineering Center
Cooperative Institute for Meteorological Satellite Studies
Phone/VoiceMail: 608.262.2759