Some platforms (eg. Emscripten) have their own version of the ar tool,
so it is important to pick one that matches the target architecture.
Without this macro we always use the default system-installed version
of ar.
This prevented either paramater from working properly, since they
would be incorrectly trying to set the other dimension and immediately
switching video modes. Now works like -geometry does.
Resolves#1086
While plain-text versions generally worked, they have been slightly
littered recently with Markdown syntax. We should be able to assume
every Windows user has a web browser and can view these documents
in nicely-formatted HTML pages instead of opening Notepad.
This adds an additional search path when looking for IWADs - in addition
to checking the current working directory, also look in the directory
where the program executable is located.
To give some context for why I'm adding this: apparently there's a small
number of users who do something very unpleasant that I'd really prefer
they didn't: they "install" Chocolate Doom into Steam by replacing
dosbox.exe from their Steam installation of Doom with a renamed version
of `chocolate-doom.exe`. Yuck, I don't approve - it's a grotesque hack.
This works but it has a bug: Chocolate Doom picks up the Steam IWADs
from Windows registry keys. This means that it always starts doom2.wad,
and launching "Ultimate Doom" will actually launch Doom II. This solves
that problem, and while I don't approve of dumb Steam hacks, the change
itself is reasonable and it's an eminently sensible place to look for an
IWAD file.
The new functions significantly improve readability and I'm pretty
sure that most of these changes produce logic that is equivalent to
the existing logic.
These extract the directory / base filename, equivalent to the Unix
`dirname` / `basename` commands. Repeated code throughout the codebase
seems to reimplement this particular functionality.
