Merge branch 'fix-file-read-write-encoding' into 'master'

Fix file read/write encoding

This hopefully provides a reasonably complete set of fixes for handling file encoding when reading and writing files.  It is not perfect since it does not handle _.java_, _.gradle_, or _pom.xml_ in any encoding, as is allowed.  But I think it should only be an improvement of the current state, and at worst, should work only as bad as the current setup for most language setups

See merge request !129