[PATCH] No 'unsigned vs. 0' warnings in system headers

[Jeffrey A Law]

  In message <20000628164718.D1325@perlsupport.com>you write:
  > This fixes bootstrapping with libstdc++-v3.
  > 
  > 
  > 2000-06-28  Chip Salzenberg  <chip@valinux.com>
  > 
  > 	* c-common.c (shorten_compare): Quiet warnings about unsigned
  > 	comparisons with zero when they occur in a system header.
Thanks.  Installed.  Sorry about the delay.
jeff