Remove test for Enterprise.

There is no compile test anymore, and I can't see a reason why this
code should not be in both versions.
Cosmetic changes
Redmine 1947: update ps options for FreeBSD
Get all processes properties on NetBSD and OpenBSD
Merge pull request #910 from lpefferkorn/fix_bsd_processes

Get all process characteristics on FreeBSD: Redmine #1947
Merge pull request #905 from kacfengine/remove_HAVE_ENTERPRISE

Remove test for Enterprise.
Merge pull request #913 from kacfengine/upgrade_path_3_6

Upgrade path 3 6
Disable enterprise extension test when using builtin extensions.