Old modperl had several flaws and was very outdated.
New modperl makes the whole ZNC API accessible from inside perl.
Modperl API was changed, so old perl modules are not supported,
but they weren't used much anyway.
Modperl needs --enable-perl option to ./configure.
This introduces new dependence on SWIG, which is needed only while
compiling ZNC. So to use modperl, you need to install SWIG or
to download several files and use --disable-swig option of configure.
git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@2120 726aef4b-f618-498e-8847-2d620e286838
