Added cp949/ks_c_5601-1987 support
Whoops - missed a comma
Added tests for CP949
Added a test to compare iconv-lite with iconv for CP949
Converted cp949 to filemapping. filemapping loads (on demand) mappings from a filemapping folder.

More mappings can be downloaded from
http://www.unicode.org/Public/MAPPINGS/
Merge pull request #31 from dangibson/master

Added cp949/ks_c_5601-1987 support