check the return value of git clone instead of its stderr content
Use latest glib.
Cross-compile Python for Android.
sigrok-cross-android: Build libsigrokdecode and sigrok-cli.
sigrok-cross-android: Build libserialport.
Pass home directory to makensis.
Fix libftdi build.

libftdi needs to be able to find libusb-config, which is installed in
the $PREFIX/bin directory.
Use patch instead of sed to apply hack to pulseview link flags.
sigrok-cross-mingw: Build libusbx.
sigrok-cross-mingw: Abort on error.
sigrok-cross-android: Parameterize python version.
Mark cross-compile scripts as working, since they are.