dmd 1.041 and 2.026 releases

[Don]

Nick Sabalausky wrote:
> Great release! :)
> 
> Although I'm curious, where is the 3x speed improvement from? Just general 
> misc optimizations, or something specific? 
> 
> 

It's just the exp(), expm1(), and exp2() functions. Previously they used 
  some extremely slow asm instructions. I wrote completely new 
implementations that are fast. It was done primarily because the C std 
math library was inaccurate on Mac OSX. Most people won't care. But in 
the past, someone (Robert Frazer, I think) had complained that DMD's 
exp() was the bottleneck in his code, and was less than half as fast as 
MSVC/Intel, so the speed of these functions is actually critical sometimes.