Resolves https://gitlab.com/OpenMW/openmw/-/issues/8100
Also removes some old crud.
Hopefully the old crud is all:
* Handled automatically by CMake now we're using the modern approach.
* A hack-fix for a problem caused by not using the modern approach.
* Massively outdated so no longer necessary.
If it turns out this makes CI fail, I'll tweak things as necessary.
Changes that might not be wanted include:
* Getting rid of our BOOST_STATIC CMake option. In cases where the CMake config doesn't make the one correct choice from the build environment (i.e. because there's a choice) the CMake config exposes the option already.
However, we were forcing this on for Windows, so that might matter.
It seems to default to static on my machine even though I thought I read something suggesting otherwise, so we'll see how things go with that.
If we eventually put CMake in charge of installing dependency DLLs this will be a moot point as we won't need to care.
* Bumping the minimum version of Boost to 1.70.0, as that's the first with working CMake config.
It's from 2019, so plausibly there are distros too scared to use a library from five years ago as it can't legally drink in the US (although it could in limited quantities with parental supervision in the UK, as long as it's just something inconsequential like a single sip of beer).
Portable Launcher (plus a whole slew of bugs fixes for problems I found that I suspect aren't on the tracker)
Closes#6846
See merge request OpenMW/openmw!3925
Previously it was quasi-mandatory - lots of things would add it, e.g. when running openmw through the CS, but it could technically be disabled.
Now it's treated like the resources/vfs directory and implicitly added by the engine etc.
Fixed some types
removed useless header
applied clang format
fixed compile tests
fixed clang tidy, and closer to logic before this MR
Removed hardcoded refids
unless there is a returned value we don't use static RefIds
can use == between RefId and hardcoded string
Fix clang format
Fixed a few instances where std::string was used, when only const std::string& was needed
removed unused variable
Slowly moving through the open-cs errors
Good progress in openCS
Very good progress on openCS
Getting closer with openCS
OpenCS compiles and runs! Didn't have time to test it all though
ix openMW
everything compiles on windows??
Fix gcc
Fix Clang
