Add ReplaceChars with a char16_t array. Bug 979556, r=bsmedberg
Use the new ReplaceChars with char16_t array. Bug 979556, r=bsmedberg
Add U+2029 PARAGRAPH SEPARATOR and other characters with bidi type Segment Separator and Paragraph Separator to the characters we convert to whitespace before passing text to the Bidi engine. Bug 847242, r=roc