Samsung

Two more patches from Samsung Tizen code:

1.  Parse whole access type string, not only first 5 bytes
    A small patch to avoid errors like "rrwxat".

2. Add support for modification rules
    This adds support for a new kernel interface "change-rule", first appearing in v3.10-rc1
    (http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e05b6f9).
    It allows adding or removing permissions for a rule instead of overwriting the existing rule.
    
    This patch to libsmack has been previously reviewed and accepted in RSA gerrit, but I waited with sending it here until the proper interface is merged into kernel.