strongswan: fix crypt() redefinition
Add patch from upstream pending pull request (#72) to fix crypt() definition
conflict.
Fixes:
http://autobuild.buildroot.net/results/612/
6120add5ad6e7f5d575fc2a2442cd7fe5302eb46/
http://autobuild.buildroot.net/results/ba1/
ba1298e71ef28857654ae8d4593d09e4fe8cdda0/
http://autobuild.buildroot.net/results/6b9/
6b928e2a6a35bfb21c792fca083bc4cbdaef9304/
Cc: Jérôme Pouiller <jezz@sysmic.org>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>