droid: temp fix runtime crash on load, disable gmp
Cannot load library: soinfo_relocate(linker.cpp:975):
cannot locate symbol "__gmp_binvert_limb_table" referenced by "libavformat-54-arm.so"...
fix curl detection with unified deps - there is no pc file and we cross compiling
temp workaround: add a simpler FindSwig module, the standard one seems to choke on unified deps