More fixes for betai and incbet. 3 examples added to test folder.
add two new files created by Dave for df1b2variable - double and its reverse form
Fix for lgam bug on the mac os. Removed duplicate symboles and consolidated to df11fun.* files. Removed df1fun.* files. Removed copy commands from the makefiles.
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.