Older releases stored a few function names not defined by ODFF, namely
EASTERSUNDAY instead of ORG.OPENOFFICE.EASTERSUNDAY, TDIST instead of
LEGACY.TDIST and B instead of BINOM.DIST.RANGE.

Since OOo/LibO 3.3 the proper function names can be read, additionally to the
"wrong" names. Now it's time to write the proper names and still accept the
incorrect ones.

Test cases are attached to AOOo issues:
ORG.OPENOFFICE.EASTERSUNDAY
https://issues.apache.org/ooo/show_bug.cgi?id=112882
LEGACY.TDIST and BINOM.DIST.RANGE
https://issues.apache.org/ooo/show_bug.cgi?id=110229
Note that the FALSE in A2 and A3 is a result of the string comparison of the
actual formula, that differs in separators (, vs ;) only.
(cherry picked from commit a9b03bd1)