DMD metaprogramming enhancement

[Suleyman]

Hello everyone,

I am happy to announce that in the next DMD release you will be 
able to more freely enjoy your metaprograming experience now that 
a long-standing limitation has been lifted.

You can now instantiate local and member templates with local 
symbols.

Example:
---
struct S
{
     private int _m;
     void exec(alias fun)()
     {
         fun(_m);
     }
}

unittest
{
     int localVar;

     void set(int i)
     {
         localVar = i;
     }

     auto obj = S(10);
     obj.exec!set();   // no error or warning

     assert(localVar == 10);
}
---

I hope you enjoy!