automake 1.12.x automatically deletes empty directories, so
the additional rmdir from the do_install_append fails.
cleanup the do_install_append for automake 1.12.x
Avoids this build issue:
| rmdir: failed to remove `/srv/home/nitin/builds2/build0/tmp/work/i586-poky-linux/gpgme-1.3.2-r0/image/usr/libexec': No such file or directory
| ERROR: Function failed: do_install
Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
