Really put svn:keyword Id...
Add svn 'Id'.
More fixes for betai and incbet. 3 examples added to test folder.
Fix union example segmentation problem.
add two new files created by Dave for df1b2variable - double and its reverse form
Define 'sumsq' as alias of 'norm2'
Added matrix exponential for df1b2matrix
Copied revision 1006 from shibi to nceas. Old version control will now be only read only. This will be the primary version control.