Fixes Android build failure with NDK r25 beta4 because "vulkan_beta.h"
was not found.

lib/src/libmpdclient-2.19/meson.build:1:0: ERROR: Unknown options: "needs_exe_wrapper"

The "needs_exe_wrapper" option was incorrectly set under
[built-in options] rather than [properties].

Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>

Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>

This reverts commit 6ed4aff4.  The
Meson wrap is broken on non-x86, because it unconditionally includes
<cpuid.h> which is an x86 only header.

As per Meson 0.56.0:
 https://mesonbuild.com/Machine-files.html#properties

Not necessary anymore since Meson 0.50.0:
 https://mesonbuild.com/Release-notes-for-0-50-0.html#libdir-defaults-to-lib-when-cross-compiling

Let cmake know that we're cross-crompiling.