Fix cf-execd sending too many emails.

Timestamps in the log file would make all cf-agent logs look different
so cf-execd would send an email on every run, even if nothing changed.
Fixed by removing the timestamps before comparing each log line.

Fixes issue 3011.
Merge pull request #787 from jeffali/fix_build/1

fix build. put the right function name in unit test src_test
Merge pull request #782 from jeffali/temp/2988_2

Fixes redmine #2988 otrs #1221. Get rid of special chars in debian6/7's /etc/issue
Merge pull request #780 from kacfengine/issue-3011

Fix cf-execd sending too many emails.
Merge pull request #786 from jeffali/temp/2912

Fixes segfault due to sscanf not size limited (redmine #2912)
avoid testcase failure in non-debian env
Merge pull request #790 from kacfengine/ubuntu_test_failure

avoid testcase failure in non-debian env
Internal data coherence checks + removal of keys from lastseen and fs