We need to use a "C" locate to read/write files, and therefore switch the locale.
Removing use of setlocale( LC_NUMERIC, "C" ) and use only
wxLocale( "C", "C", "C", false ) was too fast: on linux it breaks the env vars.
on MSW
using setlocale( LC_NUMERIC, "C" ) generates an alert message in debug mode,
and this message ("Decimal separator mismatch") must be disabled.
But calling wxLocale( "C", "C", "C", false ) works fine
On unix:
calling wxLocale( "C", "C", "C", false ) breaks env vars containing non ASCII7 chars.
these env vars return a empty string from wxGetEnv() in many cases, and if such a
var must be read after calling wxLocale( "C", "C", "C", false ), it looks like empty
So use wxLocale on Windows and setlocale on unix
Jeff Young
jean-pierre charras
Marek Roszko