--with-devkit doesn't control nmake

[Derek White]

[This is likely a bug, but thought I'd ask it as a question first].

Windows devkits contain an nmake.exe, but the configure and make scripts 
do not define and consistently use an NMAKE variable to make sure the 
devkit version is used, as many other commands do.

I had assumed that my builds were using the nmake.exe from the same 
devkit toolchain as the compilers, etc., but in fact I was using nmake 
from VS2005, as provided by my company's devops department on my 
entitlement machine.

I don't believe that actually caused problems in my builds, but it took 
a while to confirm it, and could easily cause a problem in the future.

Bug or no bug? Thanks!

  - Derek