Update on the D-to-Jai guy: We have real problems with the language

[Walter Bright]

We have made several attempts at making templates faster, such as the alias 
reassignment change. Some big improvements happened.

Some benchmarking shows that a couple templates were at the top of the list of 
time lost instantiating them. I hardwired them into the compiler, and now those 
go pretty fast.

A lot can be done by simply going through Phobos and examining the templates 
that forward to other templates, and perhaps manually inlining templates to 
avoid expansions.