Upgrade www/c-icap from 0.4.4 to 0.5.3
Since I'm here take maintenership of this port

Major changes for 0.5.2:
Bug fix: c-icap crashes when converting ci_simple_file_t to a memory object
Document the forceUnload=off option for Service/Module configuration parameter
ci_headers_value* functions should remove spaces at the beginning of the returned value

Major changes for 0.5.1 :
TLS/SSL support. This feature sponsored by Ergon Informatik AG.
A non-blocking ICAP client API. This feature sponsored by Ergon Informatik AG.
Allow 204 response on preview handler even if the ICAP client does not support preview.
New API functions