Enable HTTP/1.1 support for roundup-server This enables keepalives and seems to prevent a lot of hangs/slowness in my configuration. configuration.py: add new HttpVersionOption. This is used by the command line/config in roundup-server. Validates http version string. roundup-server.py: enable HTTP 1.1 by default. use -V to set HTTP/1.0 on command line or set http_version in config file. Fix typo in config description for option include_headers. Add more vertical spacing for error report and usage display. roundup-server.1: add doc on -V also doc -I which was missing. Remove uneeded "to" from a sentence on ssl.