ngircd:
 * bump version to 20.2 (by dns)
 * fixes #2100
 * make FREETZ_PACKAGE_NGIRCD_STATIC depend on FREETZ_PACKAGE_NGIRCD (just like all other packages providing similar option), adjust help for it


git-svn-id: file:///var/svn/freetz/trunk@10483 149334a1-2f27-0410-a3b9-fc62619ac1e6