[visad] VisAD update and new VisAD homepage

The VisAD library has been udpated to revision level r6044.  The
changes since the last update in May, 2013, are described below.

Please also note that the VisAD home page has a new address:

<http://visad.ssec.wisc.edu>

We are evolving this content to keep it more up-to-date, fix broken
links, etc.  It will take some time, but for now it is pretty much a
re-formatted version of the original pages.

The "old" home page will be retained for legacy purposes.

The Javadoc will remain for the time being at:

<http://www.ssec.wisc.edu/visad-docs/javadoc/>

Here is a summary of the changes to the VisAD library since the last update:

----------------------------
tomw2, 2013-06-18 : Merge pull request #16 from
JanKianicka/master

----------------------------
jano, 2013-06-14 : Finalized getSubpoint and merged new
test approach in GOESnav.

core/src/edu/wisc/ssec/mcidas/GOESnav.java

----------------------------
tomw2, 2013-05-30 : Merge pull request #15 from tomw2/docup

----------------------------
Tom Whittaker, 2013-05-30 : Updated javadoc to remove some
warnings

core/src/edu/wisc/ssec/mcidas/AREAnav.java
core/src/edu/wisc/ssec/mcidas/AreaDirectoryList.java
core/src/edu/wisc/ssec/mcidas/AreaFile.java
core/src/edu/wisc/ssec/mcidas/AreaFileFactory.java
core/src/edu/wisc/ssec/mcidas/CalibratorFactory.java
core/src/edu/wisc/ssec/mcidas/GMSXnav.java
core/src/edu/wisc/ssec/mcidas/GridDirectory.java
core/src/edu/wisc/ssec/mcidas/GridDirectoryList.java
core/src/edu/wisc/ssec/mcidas/McIDASUtil.java
core/src/edu/wisc/ssec/mcidas/adde/AddeURL.java
core/src/edu/wisc/ssec/mcidas/adde/DataSetInfo.java
core/src/visad/LogarithmicUnit.java
core/src/visad/OffsetUnit.java
core/src/visad/SampledSet.java
core/src/visad/ScaledUnit.java
core/src/visad/Unit.java
core/src/visad/python/JPythonMethods.java

----------------------------
tomw2, 2013-05-28 : Merge pull request #14 from
tomw2/missingnav2

----------------------------
Tom Whittaker, 2013-05-28 : Changed the name of
mask..Navigation() method []

core/src/visad/python/JPythonMethods.java

----------------------------
tomw2, 2013-05-28 : Merge pull request #13 from
tomw2/missingnav

----------------------------
Tom Whittaker, 2013-05-28 : Added methods to check for
missing nav []

core/src/visad/python/JPythonMethods.java

----------------------------
Jonathan Beavers, 2013-05-14 : Added visad_doc.jar and
visad_examples.jar to gitignore.

.gitignore

----------------------------
tomw2, 2013-05-14 : Merge pull request #6 from
jon4than/build_fixes

----------------------------
tomw2, 2013-05-14 : Merge pull request #3 from
julienchastang/performance

--
Tom Whittaker
University of Wisconsin-Madison
Space Science & Engineering Center (SSEC)
Cooperative Institute for Meteorological Satellite Studies (CIMSS)
1225 W. Dayton Street
Madison, WI  53706  USA
ph: +1 608 262 2759