String conversion bug/annoyance fixed

[Christoph Borgolte]

I don't think that we need more/new number to string and vice versa
conversion functions. There are many.
What really should be fixed is the problem that (at least under wxGTK)
you can't say setlocale(LC_NUMERIC, "C") once and for all. The system
allways set it back to something different. This especially is a problem
when you are porting/using legacy code with many C functions like sscanf
etc..

regards
chris