Changed #include <linux/if.h> to #include <net/if.h>

Including linux/if.h instead of net/if.h causes conflicts with applications that use net/if.h.
Merge branch 'if_h_issue' into develop
HTMLForm: in URL encoding, percent-encode more characters
Fixed build script for VS2013
Merge pull request #419 from PaulFreund/patch-1

Fixed build script for VS2013
Merge pull request #418 from teemu-kemppainen/develop

Using #include <linux/if.h> conflicts with other libraries and code that use #include <net/if.h>
Poco::Net::X509Certificate::verify() no longer uses DNS reverse lookups to validate host names
cert hostname validation is case insensitive and stricter for wildcard certificates
Merge remote-tracking branch 'upstream/develop' into develop