package/aircrack-ng: bump version to 1.2-rc4

package/aircrack-ng: bump version to 1.2-rc4

Removed patches applied upstream:

0001-Makefile-use-pkg-config-to-find-libpcre-it-s-more-cros.patch
http://trac.aircrack-ng.org/changeset/2445

0002-Optionally-use-LIBPCAP-for-required-libpcap-libraries.patch
http://trac.aircrack-ng.org/changeset/2446

0003-Wesside-ng-Use-termios-instead-of-sys-termios.patch
http://trac.aircrack-ng.org/changeset/2533

Added option to disable stack-protector support auto-detection in gcc.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>