am fadee810: Fix build/host-setup.sh in various ways - run as bash script (since Debian\'s new \'dash\' shell doesn\'t support it) - remove obsolete host GCC requirement - improve Windows support by using better heuristics for the executable suffix - better NDK root direc

Merge commit 'fadee810996ef47ac8ab3549a172b3ab994faab3'

* commit 'fadee810996ef47ac8ab3549a172b3ab994faab3':
  Fix build/host-setup.sh in various ways