LuaAssFile relied on the lifetime guarantees of intrusive lists (i.e.
you can pretty much do whatever the fuck you want and it'll work out),
but AssInfo objects are no longer owned by an intrusive list. Do awful
things to lazily copy the header section when needed to provide similar
lifetime guarantees.
They're only used by one thing (the drag visual tool), so calculating
them is pointless overhead most of the time, and it simplifies the
visual tool code much less than it complicates the grid code.
Store the data in vectors rather than AssFiles since even an intrusive
linked list has comically high memory overhead. Cuts memory usage of a
full undo stack with 15k lines by 65 MB for 32-bit and 130 MB for
64-bit. Also roughly halves how long it takes to copy the file for the
undo stack, and makes undo/redo a bit faster.
These weren't merged from 2.1.9 with the rest of the file association
code, which results in the installer trying to reference nonexistent
resources and things breaking.
Updates #1699.
After shift-clicking on the grid the row to extend from doesn't equal
the active line, and clicking on the current active line to deselect all
other lines need to update the extend row.
When launching Aegisub from Finder (but not via open), using the UTF-8
version of the locale breaks things for whatever reason, but fortunately
it's unneccesary as paths on OS X are always UTF-8 even if the locale
isn't.
Closes#1685.
Color matching to dummy video makes zero sense, and setting it to None
results in breakage when someone opens dummy video for an already
typeset script.
Closes#1690.
--enable-stl replaces the implicit conversion to char/wchar_t* with one
to std::[w]string. This breaks conversions to boost::filesytem::path and
makes some ternaries ambiguous (which GCC helpfully reports as no
conversion existing rather than an ambiguous conversion).
