Return to directory of Todd's CASA extensions
Converts uids from native name to underscore-delimited name (if necessary), preserving any initial path
if it has one. Will not corrupt a pathname that was previously converted.
Usage:
au.uidToUnderscores(asdm)
Example:
CASA <8>: au.uidToUnderscores('Remy/uid://A002/Xa48b1f/X1b0')
Out[8]: 'Remy/uid___A002_Xa48b1f_X1b0'