lighttpd + htdigest mode does not set realm

[anonymous]

I've been trying to get this plugin working with lighttpd and noticed a few things:

• lighttpd htpasswd auth requires crypt() encoding, and can't deal with md5(), which is what this plug generates, so htdigest is required for proper support in lighttpd, but!
• when using htdigest mode authentication, the "htdigest_realm" setting in trac.ini is not honored and the realm is set to the empty string "" inside the htdigest file after updating password via this plug (note that this can be worked around by simply using empty string for realm in lighttpd configuration).

[Matt Good]

(In [963]) merge r962 to 0.9 branch (fixes #465)

[Matt Good]

The realm was read in the constructor for the htdigest handler, so if you set the value in the config after the server had been started the change was not detected. r962 and r963 fix that.