UTF-8 support.

[vega0]

Changed charset to UTF-8 and fixed utf8.char fuynction but anyway got error.

[GCompute GLua STEAM_0:1:513332898 (ekau) -> STEAM_0:1:513332898 (ekau)]
@!!! Match !!!@	userdata: 0x4db81898
------------------------------
set

Print pattern
set_Repr	table: 0x40986880	1072,1073,1074,1075,1076,1077,1078,1079,1080,1081,1082,1083,1084,1085,1086,1087,1088,1089,1090,1091,1092,1093,1094,1095,1096,1097,1098,1099,1100,1101,1102,1103
S( "абвгдежзийклмнопрстуфхцчшщъыьэюя" )
--- /pprint

!!! Done Matching !!! success: 	false	final position	1	final cap index	1	#caps	0
Failed
nil

print(package.loaded.lulpeg.R("ая"):dmatch("е"))