Use global symbols as invoker argument

Gecko is full of RTLD_GLOBAL dlopen calls.

Requires: https://github.com/tmeshkova/gecko-dev/pull/13

Dima already added it as patch to https://github.com/nemomobile-packages/gecko-dev/commit/37e6fe7d7813d8b37eacf02b0d9a7f5d52a45890