fix
Issue 10639 - Win64: wrong optimizer codegen with struct literal with complex fields
Merge pull request #2359 from WalterBright/fix10639

fix Issue 10639 - Win64: wrong optimizer codegen with struct literal with complex fields
fix Issue 10583 - DMD 2.063 dumps core with mixins involving __traits(getProtection)
fix Issue 10628 - spurious "hidden by" deprecation warning