transcode: use width/height if visible dimension is not specified by decoder/filter
use i_visible_ dimensions to initialize encoders
Add a mono font name to the text_style_t
Freetype: Use the style also for the mono font
Freetype: simplify ProcessNodes without using p_sys
Freetype: move ProcessNodes to text_renderer
TS: fix playback of HDPR files
contrib: hopefully fix gme build on mac

Signed-off-by: Rafaël Carré <funman@videolan.org>