fix character width of halfwidth forms

Handle halfwidth forms <U+FF61..U+FFDF> and <U+FFE8..U+FFEE> as narrow.
Merge pull request #189 from ewie/master

fix character width of halfwidth forms
Add VTX input plugin

Plugin uses libayemu (http://sourceforge.net/p/libayemu/)
Merge branch 'master' of https://github.com/cmus/cmus

Conflicts:
	vtx.c