added: there are some new buttons on the standard tab
- (...) - the whole expression is surrounded by brackets
- 1/(...)
- ;
- %
- floor/ceil
- min/max
- root
- gamma
added: some options on display tab:
- grouping
- input decimal point
- parameters separated by
git-svn-id: svn://ttmath.org/publicrep/ttcalc/trunk@227 e52654a7-88a9-db11-a3e9-0013d4bc506e