I think it would be nice to allow an equal to separate a short option
letter from its abutting argument.  e.g. these commands using the test1
executable would all work the same:

 ./test1 -2 foo
 ./test1 -2=foo
 ./test1 -2foo
 ./test1 --arg2 foo
 ./test1 --arg2=foo

Since this has been a syntax error in released versions of popt, this
should not cause a compatibility problem.  This fix requires my prior
patch to make sure that short-option parsing doesn't have longArg set.

..wayne..