manually merge 1c3dd91 to update rsyslog7 to 7.2.7

by "git show 1c3dd91fdd6056cd62e0499b88f5e5f382f633c2  . | git apply
--reject -"

at least we need 7.2.5, which contains a critical bug fix.
http://bugzilla.adiscon.com/show_bug.cgi?id=411

1c3dd91 the commit
e2ed082 ignored because security/libgcrypt is not updated in branch
reallyenglish
a011d2c USES is not merged in our branch
1357769 USES is not merged in our branch
c18b1a2 harmless