Merge r349917 from trunk:

Escape the dots in the regular expression.

Merge r595288 from trunk:
add note on security impact of suppress-error-charset
for broken browsers

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@654730 13f79535-47bb-0310-9956-ffa450edef68