If the buildtools installation failed, we were using a subshell instead
of a compound command and thus the subshell exited but the script
continued on, which is really not what we want to happen. Additionally
log the buildtools installer output to a file and cat it if it fails so
that you can actually see what went wrong, as well as amending the
environment setup script to print a warning as we do when the
preparation fails.
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
