patch applied (ghc-6.6/packages/base): wrapround of thread delays

[Ian Lynagh]

Mon Jan 29 08:05:19 PST 2007  Neil Davies <SemanticPhilosopher at gmail.com>
  * wrapround of thread delays
  
    * made the wrapround of the underlying O/S occur before the wrapround
      of the delayed threads by making threads delay in microseconds since
      O/S epoch (1970 - Unix, 1601 - Windows) stored in Word64.
    * removed redundant calls reading O/S realtime clock
    * removed rounding to 1/50th of sec for timers
    * Only for Unix version of scheduler.

    M ./GHC/Conc.lhs -21 +10 r2
    M ./include/HsBase.h -7 +5 r1