Added optional Poco RegEx that could be used instead of own RegEx class
Fixed a few typos; added is_secure() to Connection; hftest reports SSL is active; get_ssl_context only available if SSL configured in.
Merge pull request #35 from syegres/fixfor_fx-137-regex

Fixfor fx 137 regex
FX-137 integrated Poco and regex classes
exception safe poco regex constructor
Merge pull request #37 from syegres/fixfor_fx-137_regex-1

exception safe poco regex constructor
FX-137 - reinstated get_pattern for poco version