[lazarus] Patch for menu editor & mask edit

[Florian Klaempfl]

Tony Maro wrote:
> 2) Fixes the date separator issue when working with American / 
> international date formats since FPC has the dateseparator as a 
> constant, not changable to match your region.

It should be changeable? However, maybe somebody contributes a 
Sysutils.GetFormatSettings; for posix compliante systems (without using 
the glibc, of course :)).