title: android NDK - make standalone toolchain fails
body: <p>I tried to make a standalone Android NDK toolchain on Linux 64 bit: </p>
  
  <p>~/build/android-ndk-r9/build/tools $ ./make-standalone-toolchain.sh --platform=android-14 --ndk-dir=/home/user/build/android-ndk-r9 --system=linux-x86_64 --install-dir=/home/user/build/android-14-toolchain
  Auto-config: --toolchain=arm-linux-androideabi-4.6
  Copying prebuilt binaries...</p>
  
  <p>No files are actually copied. Something goes wrong. The NDK ist the latest release r9.
  How can I run the script so that the files get copied to the installation directory?</p>