install: don’t force append /mpv to docdir
sub/ass_mp: remove superfluous message prefixes
.gitignore: add pdflatex output files
wayland: remove moving window by grabbing

Moving the window was convenient but generates a MOUSE_LEAVE event
which it shouldn't. Now we remove it, because it is still possible
to move the window in weston with MOD+BTN0.
wayland: remove outdated comment
command: fix short buffer when handling of long property names

This wasn't enough and could lead to a cut off message shown on OSD.
Just make it dynamic, since we already use dynamic memory allocation
at this point anyway.
sd_ass: remove dead code

This code was made inactive some months ago. At this time it wasn't
entirely clear whether this code was still needed, but now I'm pretty
sure it isn't. Even if it is, it didn't work anymore.
sd_ass: minor simplification

There shouldn't be any functional changes. Just reduce the amount of
pointless temporary variables.
Merge remote-tracking branch 'upstream/master'
Update