hgweb: encode WSGI environment like OS environment...
hgweb: encode WSGI environment like OS environment
Previously, the WSGI environment keys and values were encoded using latin-1.
This resulted in a crash if a WSGI environment key or value could not be encoded
using latin-1.
On Unix, the OS environment is byte-based. Therefore we should do the reverse of
what Python does for os.environ.
On Windows, there’s no native byte-based OS environment. Therefore we should do
the same as what mercurial.encoding does with the OS environment.
