-B${prefix} during bootstrap

[Jeffrey A Law]

  In message < 20000921150050.A11167@disaster.jaj.com >you write:
  > Something that's bothered me for years that I'm just now asking...
  > 
  > Why is -B$prefix passed to the stage1 compiler when building the stage2
  > compiler?  If $prefix isn't there yet (normal when bootstrapping, I would
  > think), then what's the point?
Sometimes $prefix is there and sometimes it has programs we want to use
during the bootstrapping process.

jeff