They should not be used by plugins. And in fact, they are not.

It's pretty useless to copy the same value to every single object.

Also never destroys global mutex, otherwise we get a race condition
(which is pretty contradictory to the point for mutexes)

It is mostly useful to register global mutexes and such things.

libtool: added support for libtool executable wrapper on Cygwin when compiling in devel mode, this code may also need be ported on Linux if necessary