Fix Issue 12668 -  std.traits.functionAttributes should use the new
getFunctionAttributes trait.
[reg] Fix 13210 : libphobos2.so not being built
Merge pull request #2131 from AndrejMitrovic/Fix12668

Issue 12668 -  std.traits.functionAttributes should use the new getFunctionAttributes trait.
Merge pull request #2377 from Dicebot/fix-13210-makefile-dll

[reg] Fix 13210 : libphobos2.so not being built