Make everything UTF-8 based

Convert everything that deals with strings to a UTF-8 based system.

Not very difficult, but needs a lot of checking, testing and allows for easy breakage.

assigned to @Courmisch

added Difficulty::hard + 1 deleted label

changed milestone to %0.8.5-final

(In [11988]) Use UTF-8 internally (closes #16 (closed) and introduces lots of yet to be uncovered bugs)

• libvlc: Conversion functions (needs performance improvement) Convert filenames from command line
• SAP, Skins2: no perform own UTF-8 conversion
• file, playlistold : convert
• wx, winCE : assume UTF-8

added Status::fixed label

closed

mentioned in issue #236 (closed)

mentioned in issue #486 (closed)

mentioned in issue #552 (closed)

mentioned in issue #668 (closed)

mentioned in issue #1240 (closed)

mentioned in issue #1846 (closed)

mentioned in issue #2159 (closed)

mentioned in issue #2614 (closed)

mentioned in issue #4098 (closed)

mentioned in issue #4406 (closed)

mentioned in issue #4734 (closed)

mentioned in issue #5364

mentioned in issue #5640 (closed)

mentioned in issue #5765 (closed)