patch applied (packages/base): #define _REENTRANT 1 (needed to get the right errno on some OSs)

[Simon Marlow]

Thu May 18 03:41:51 PDT 2006  Simon Marlow <simonmar at microsoft.com>
  * #define _REENTRANT 1  (needed to get the right errno on some OSs)
  Part 2 of the fix for threaded RTS problems on Solaris and possibly
  *BSD (Part 1 was the same change in ghc/includes/Rts.h).

    M ./include/HsBase.h +5