Detect unicode BOMs in files that are to be diffed, and adjust the charset accordingly for transcoding to UTF-8. Should fix #2218.
Detect unicode BOMs in files that are to be diffed, and adjust the charset accordingly for transcoding to UTF-8. Should fix #2218.


git-svn-id: 0d96b0c1a6983ccc08b3732614f4d6bfcf9cbb42@2376 af82e41b-90c4-0310-8c96-b1721e28e2e2

rbaumg/trac,rbaumg/trac,rbaumg/trac,rbaumg/trac