mingw-w64: Special case for large input for complex inverse trigonometric functions (bug #49091). * src/mingw-w64-complex-inverse-trig.patch: Add patch for mingw-w64 CRT that implements a special case for large input for complex inverse trigonometric functions cacosh and casinh (and therefore functions that are derived from it, like cacos and casin). * dist-files.mk: Add new patch to list.