[ltsmaster] Sync druntime

[lionello]

Pull in druntime fixes:

• Fix issue 20019: Symbol not found: _dyld_enumerate_tlv_storage on macOS 10.15 druntime#172
• [ltsmaster] Fix dwarf code for 32bit systems. druntime#159
• [ltsmaster] Enhance parsing of DWARF data. druntime#156

[kinke]

/Users/travis/build/ldc-developers/ldc/runtime/druntime/src/rt/sections_ldc.d(583): Error: @nogc function 'rt.sections_ldc.getTLSRange' cannot call non-@nogc function 'core.sys.osx.mach.dyld._dyld_image_count'
/Users/travis/build/ldc-developers/ldc/runtime/druntime/src/rt/sections_ldc.d(585): Error: @nogc function 'rt.sections_ldc.getTLSRange' cannot call non-@nogc function 'core.sys.osx.mach.dyld._dyld_get_image_header'
/Users/travis/build/ldc-developers/ldc/runtime/druntime/src/rt/sections_ldc.d(583): Error: 'core.sys.osx.mach.dyld._dyld_image_count' is not nothrow
/Users/travis/build/ldc-developers/ldc/runtime/druntime/src/rt/sections_ldc.d(585): Error: 'core.sys.osx.mach.dyld._dyld_get_image_header' is not nothrow
/Users/travis/build/ldc-developers/ldc/runtime/druntime/src/rt/sections_ldc.d(578): Error: function 'rt.sections_ldc.getTLSRange' is nothrow yet may throw

[JohanEngelen]

@lionello @thewilsonator To prevent merging broken things into druntime, please always open an LDC merge request like this before merging druntime PRs such that you get CI testing. Now we get a dirty druntime commit history with fixups...

[kinke]

@JohanEngelen: Do you mind a force-push on the ltsmaster druntime branch?

[kinke]

Attempt to fix it: #3338. Blocked because 32-bit x86 support is lacking as well.

[JohanEngelen]

@JohanEngelen: Do you mind a force-push on the ltsmaster druntime branch?

Ah indeed hmm, I guess because we never referenced to it from LDC master branch, it's not too bad to do that.

[lionello]

Closing because it's very stale :(