utf8proc: add count() to count codepoints (#1414)
utf8proc: add count() to count codepoints (#1414)


Frenzie/koreader-base,Frenzie/koreader-base,koreader/koreader-base,NiLuJe/koreader-base,Frenzie/koreader-base,NiLuJe/koreader-base,NiLuJe/koreader-base,koreader/koreader-base,koreader/koreader-base,Frenzie/koreader-base,NiLuJe/koreader-base,koreader/koreader-base