iconv: add following CCS/CES support.- CNS11643-[3-7] <-> UCS:BMP/SIP (EUC-TW, ISO-2022-CN-EXT)- HKSCS <-> UCS:BMP/SIP (Big5-HKSCS)- JISX0213-[1-2] <-> UCS:BMP/SIP (EUC-JIS-2004,Shift_JIS-2004,ISO-2022-JP-2004)