add C++ mangling c_long and c_ulong
fix Issue 13484 - Template type deduction from delegate parameter fails

The implicit conversion of expressions to delegates was added in 0.165 (a2b1fa4978948ca4d293c38666bd607c03ba791a, http://www.digitalmars.com/d/1.0/changelog2.html#new0165), but it was replaced with lazy parameter.
fix Issue 13481 - bug with inferring attributes from built-in properties
Merge pull request #4001 from 9rnsr/fix13481

Issue 13481 - bug with inferring attributes from built-in properties
Merge pull request #3997 from WalterBright/c_long

add C++ mangling c_long and c_ulong
Merge pull request #4000 from 9rnsr/fix13484

Issue 13484 - Template type deduction from delegate parameter fails