[1466] First stab at integrating improved Hydrometeor Classification
cursor readout functionality into Image Display in a general way.
Working, but implementation maybe not quite ideal yet
[1466] Force sampling mode to NEAREST_NEIGHBOR if translating data
values to a string
Merge remote-tracking branch 'upstream/master' into hydrometeor

Conflicts:
	src/ucar/unidata/data/DataSource.java
Merge remote-tracking branch 'upstream/master' into hydrometeor
working prototype w/ translations as XML resource...code needs lots of
cleanup and solidification though [1466]
[1466] explicit types for hashmap
[1466] use hashtable; slightly better variable names
[1466] generalize for multiple translation "tables"
Merge remote-tracking branch 'upstream/master' into hydrometeor
Merge remote-tracking branch 'upstream/master' into hydrometeor
Merge remote-tracking branch 'upstream/master' into hydrometeor
Merge remote-tracking branch 'upstream/master' into hydrometeor
[1466] Reorganized in a way that makes more sense now that translations
are an xml resource.  almost ready to throw back to Unidata, just need
to make one more code cleanup pass.
Merge pull request #34 from mhiley/hydrometeor

Better cursor readout for NEXRAD hydrometeor classification, I think we can expand the usage of the translate table in other areas....