for Non-UTF8 charset
Merge pull request #267 from scriptkitz/development

Fix issues with non-UTF8 charset

If the line contains non-UTF8 characters, CTags can't jump to the
correct point (e.g. 1 #中文). Instead of using 'ignore' on unparseable
characters, use 'replace'. This causes the official Unicode replacement
character, 'U+FFFD', to be used to replace these input characters which
cannot be decoded.