Please try rdmd on large projects

[Andrei Alexandrescu]

Hello,

I just submitted 
(https://github.com/D-Programming-Language/tools/commit/c77b870fdc5674d7434b03d1767ba831eaac25b1) 
a change to rdmd that runs one thread per stat when comparing file 
dates, using David's excellent std.parallelism.

In my experiment the change introduces no additional lag on small 
projects and works 10-15% faster on moderate projects (couple dozen deps).

Could someone try rdmd against some larger projects and assess its 
behavior and speed?


Thanks,

Andrei