#2272 [SciTE] CurrentTime might get ansi string in Windows

[twu2]

In SciTEWinBar.cxx SciTEWin::SetFileProperties(), use GetTimeFormatA()/GetDateFormatA() might get non-English ansi string.
We shoud use GetTimeFormatW()/GetDateFormatW() to get unicode string.

[Neil Hodgson]

All the regions I tried use only ASCII punctuation and digits for time or short dates so there was no effect.

Change was committed as [0a42b7] with the c_str calls removed as they aren't needed.

Credited to "tommywu" which can be changed if you'd prefer a different name or formatting.