Redmine #3261: fix auditd search regex
(cherry picked from commit a7bf6275b56a440aae4a817a97244fa68fb8bdef)

Conflicts:
	masterfiles/lib/3.5/services.cf
	masterfiles/lib/3.6/services.cf
	masterfiles/libraries/cfengine_stdlib.cf
If process_result attribute is not specified, construct ANDed expression of other attributes

This prevents segfault in case process_result == NULL. Close #3224
(cherry picked from commit 10dbcebc6c6bccdb08765b161e02228eb596be8d)

Update ChangeLog.