docs: generate links from plain text documentation
docs: generate links from plain text documentation

There are two forms used throughout libvirt code comments, which
are both supported by this patch.

* plain links like e.g. http://www.libvirt.org/
* links enclosed in <> characters, e.g. <http://www.libvirt.org/>

Signed-off-by: Claudio Bley <620c9bdd34d39ed7d11f660475ae3b725e767808@av-test.de>

rlaager/libvirt,VenkatDatta/libvirt,jardasgit/libvirt,agx/libvirt,VenkatDatta/libvirt,datto/libvirt,elmarco/libvirt,andreabolognani/libvirt,elmarco/libvirt,olafhering/libvirt,fabianfreyer/libvirt,shugaoye/libvirt,crobinso/libvirt,cbosdo/libvirt,jfehlig/libvirt,andreabolognani/libvirt,datto/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,andreabolognani/libvirt,datto/libvirt,eskultety/libvirt,nertpinx/libvirt,eskultety/libvirt,eskultety/libvirt,rlaager/libvirt,VenkatDatta/libvirt,eskultety/libvirt,shugaoye/libvirt,nertpinx/libvirt,olafhering/libvirt,andreabolognani/libvirt,crobinso/libvirt,olafhering/libvirt,crobinso/libvirt,zhlcindy/libvirt-1.1.4-maintain,fabianfreyer/libvirt,nertpinx/libvirt,shugaoye/libvirt,rlaager/libvirt,zhlcindy/libvirt-1.1.4-maintain,jfehlig/libvirt,jardasgit/libvirt,nertpinx/libvirt,agx/libvirt,libvirt/libvirt,taget/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,cbosdo/libvirt,zippy2/libvirt,taget/libvirt,libvirt/libvirt,rlaager/libvirt,agx/libvirt,jfehlig/libvirt,zippy2/libvirt,datto/libvirt,taget/libvirt,zhlcindy/libvirt-1.1.4-maintain,crobinso/libvirt,agx/libvirt,rlaager/libvirt,shugaoye/libvirt,jardasgit/libvirt,cbosdo/libvirt,zhlcindy/libvirt-1.1.4-maintain,elmarco/libvirt,zippy2/libvirt,zhlcindy/libvirt-1.1.4-maintain,cbosdo/libvirt,taget/libvirt,datto/libvirt,cbosdo/libvirt,eskultety/libvirt,taget/libvirt,VenkatDatta/libvirt,VenkatDatta/libvirt,zippy2/libvirt,olafhering/libvirt,libvirt/libvirt,elmarco/libvirt,elmarco/libvirt,libvirt/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,agx/libvirt,jardasgit/libvirt,shugaoye/libvirt