fix Issue 8960 - Unable to set thread priority

- Ignore error when get-/setting the priority of a terminated thread.
Re-add forward declaration of _d_monitordelete
Merge pull request #964 from ibuclaw/fixsepcomp

Re-add forward declaration of _d_monitordelete
Do not use sort property directly
Merge pull request #669 from yebblies/issue10318

Do not use sort property directly
add missing nothrow @nogc to signal functions
require nothrow for callWithStackShell callback
Don't use built-in array .sort in rt.util.container.treap
Merge pull request #970 from quickfur/adSort_1

Don't use built-in array .sort in rt.util.container.treap
Merge pull request #966 from MartinNowak/callWithStackShell

require nothrow for callWithStackShell callback
Merge pull request #550 from MartinNowak/fix8960

fix Issue 8960 - Unable to set thread priority
avoid sse2 checks for x86_64
Merge pull request #976 from MartinNowak/sse2X64

avoid sse2 checks for x86_64
Remove typedef handling
fix nothrow issues

- revealed by enabling nothrow checks in functions
  with inline asm
Merge pull request #978 from 9rnsr/remove_typedef

Remove typedef handling
Merge pull request #974 from MartinNowak/nothrowIssues

fix nothrow issues
Added missing baud rate 57200
Merge pull request #980 from o3o/master

Added missing baud rate 57200