[PATCH] Bug 3118: ecap_enable on forces icap_enable on

This is a patch which solves the bug 3118. Because it is not so small I
am posting it here for comments.

Here is the patch description:

Currently we were updating [Icap|Ecap]::TheConfig even when
[icap|ecap]_enable was false, which may lead to service activation for
Icap or Ecap services that should be disabled. The patch removes such
services from service groups before they are activated.

The patch also warns the user when an adaptation group loses some but
not all of its services due to the new group cleanup code.

Regards,
   Christos