Suggestion for an external GC library.

[Sandeep Datta]

Considering the fact that the D garbage collector still has a lot 
of room left for improvement. Have we ever considered taking a 
look at "Memory Pool" 
(http://www.ravenbrook.com/project/mps/version/1.111/manual/html/index.html)?

The authors claim it is an industrial strength garbage 
collector/memory pool in use since 1994.

Is the license compatible with D?