pkg/41308: move devel/libsigc++ documentation into seperate package

[joern.clausen%uni-bielefeld.de@localhost]

>Number:         41308
>Category:       pkg
>Synopsis:       move devel/libsigc++ documentation into seperate package
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    pkg-manager
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Thu Apr 30 07:25:00 +0000 2009
>Originator:     Jörn Clausen
>Release:        
>Organization:
University of Bielefeld
>Environment:
>Description:
devel/libsigc++ was just pulled in as dependency for another package:

$ pkg_info -s libsigc++-2.2.3
Information for libsigc++-2.2.3:

Size of this package in bytes: 14143388

The majority is documentation, including references and tutorials, which I will 
never need.
>How-To-Repeat:

>Fix:
Please split this package in libsigc++-base and libsigc++-docs.