gcalctool does default "^" sanely

[Jeff Hodges]

This bug may be needed to be moved upstream. When a user enters a statement
with exponentiation using the keyboard, instead of seeing the proper "^" in the
statement, they will have entered in "XOr". Example: "5^2" entered with the
keyboard will become (and be calculated as) "5 XOr 2". I'm not so sure that
many developers find this handy and for myself and the average user, "^" should
be exponentiation, not an exclusive or. There seems to be no other sane keycode
for entering in exponentiation from the keyboard. Even "**" tosses up a
malformed statement error. This interpretation of the "^" keycode needs to be
changed into the nicely sane default of exponentiation.

[In case someone goes crazy: "**" should not be used as the new keycode for
exponentiation for a variety of reasons; the most basic of these is that "**"
does not exist as an operator for most users and mathematicians (unless they
happen to be doing some numerical analysis).]

[Jeff Hodges (jmhodges)]

This bug has been marked as a duplicate of bug 16505.