package/libpam-tacplus: bump to version 1.5.1

- Remove all patches, already applied upstream.
- Let PAM module be installed at the default place ($libdir/security).

Fixes:
  http://autobuild.buildroot.net/results/cf15b09bd7501c017a4e8cf9fb80857197d4a433/

Signed-off-by: Carlos Santos <unixmania@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
4 files changed