Moved away from QPluginLoader to C/C++ style QLibrary files for the
module interface. It's less limiting this way because the host can
be built statically and still beable to load non-statically built
modules. It's not tested but the i think it should now beable to
load modules built on a different version of Qt than the host but
the module would must likely need to be build statically.
Another change to the module interface makes it so the module can
can now also see the host version in CommandLoader::hostRevOk()
and decide if the host can continue loading it.
The host 'host_info' internal command now displays the version of
Qt it was built on.
All documentation related to the module interface has been
updated. No attempt will be made at the host side to support rev
2 modules so the new minimum rev is now 3.
1.0.2 --> 1.1.2
