#23 ICAP client

[Pinky]

ICAP is protocol described by RFC 3507,
Its purpose is check and modify content of internet traffic.

It is allow integration with other software.
Cooperate with antivirus and other mail scanners and modifiers (e.g. mime attachment filtering).

c_icap project privide ICAP client, integration is now (more or less) possibile trougth bash scanner.

Native integration should improve resource usage and much more simple integration with other software.