WME Subtitles

I've ported Mnemonic's subtitle code from WME1 and tweaked it to go with our style and conventions.

This seems to work well enough with both autodetected and 'regular' subtitle files from my demo game (mov_test from my repo wme_testsuite)

You are a bit inconsistent with regards to blank lines at the start of functions. Most of the other pre-existing functions in WME don't have these though.