misplaced #include in libgcc2.c

[Jeffrey A Law]

  In message <199710121535.IAA07804@ninemoons.com>you write:
  > It appears to me that <string.h> needs to be included before first use of
  > string functions like strlen.
  > 
  >   Sun Oct 12 08:16:40 1997  Fred Fish  <fnf@ninemoons.com>
  > 
  > 	* libgcc2.c (string.h): Hoist inclusion to occur before first use of
  > 	string functions like strlen.
Thanks.  I've installed this patch.
jeff