fixed the bug of  change level in a bundle .
move to beta release in the nightly release, prepare for the stable release in  a week or two
fixed per Brian's suggestion
use gridUtil to calculate the altitude, this change will enable to calculate the altitude of WRF nc output
misc
fixed the bug in Brian's test result
allow color by parameter to be derived parameter
misc
major updates to test tcl script
fixed error in setting userDir in runtest.tcl
updated test script to allow offscreen mode
forgot to get global var in test script
For ADDE Upper Air Point contour displays, make the level labels 'SFC' instead of '1001 hPa'