change install target to match current release structure
Rename dmd associative array functions to avoid conflict with similarly named druntime functions
Replace Scope's custom allocator with a normal function and clean up interface
Merge pull request #3796 from yebblies/ddmdaav

[DDMD] Rename dmd associative array functions to avoid conflict with similarly named druntime functions
Merge pull request #3798 from braddr/install-fix

change install target to match current release structure
Merge pull request #3795 from yebblies/scopector

[DDMD] Replace Scope's custom allocator with a normal function and clean up interface