#156 v4.13 Fake temporary files in Windows

[Tebasuna]

With v14.2 work effects like \'norm\' (temporary files in tmp folder in root drive) in a Windows system.
With v14.3 I can\'t use \'norm\'. Using this command line (with or without --temp parameter, D:\\Temp exist):

sox -V4 --temp D:\\Temp input.wav output.wav norm

I get these relevant messages:

sox: SoX v14.3.1 ...
Output File : \'output.wav\' ...
Duration : 00:00:20.00 = 960000 samples ~ 1500 CDDA sectors ...
sox DBUG libsox_i: fake mkstemp, name=D:\\Temp/libSoX.tmp.a03012 (unlinked) ...
sox DBUG wav: Finished writing Wave file, 16380 data bytes 1365 samples

Maybe is a problem with the slash (in Windows must be backslash) in the temporary file.