std::transform does not correctly handle code points outside of the ASCII range.
Poco::cat is faster than using std::string + operator.
Less code, easier maintenance.
Use the C++ std::string preferred method.
Merge branch 'feature-UTF8-support' of github.com:openFrameworks-ofFont/openFrameworks into feature-UTF8-string

Conflicts:
	libs/openFrameworks/utils/ofUtils.cpp
Merge pull request #1 from bakercp/feature-UTF8-string

Feature utf8 string
Merge pull request #2910 from openFrameworks-ofFont/feature-UTF8-support

Update String Functions, Include UTF-8 Support