Crash when escape quoted strings are in select() statements.

[eglaysher]

On April 22nd, in the English Edition of Clannad, on Tomoyo's Route, rlvm crashes with:

(SEEN422)(Line 1575):  SelectElement(): expected `\n'

[eglaysher]

(This is actually happening in the scenario parsing code before we hit our first meta element, so the seen causing problems is actually SEEN423.)

[eglaysher]

This happens because we aren't parsing the following string correctly:

"Say \"Hello.\""

We see the opening quote, and then don't handle the escaped interior quotes correctly in libreallive::NextString().