Patch to remove re-assert warnings on powerpc-*-linux-*

[Jeffrey A Law]

  In message < 19990403141354.A24534@drow.res.cmu.edu >you write:
  > Mon Mar 29 13:24:44 1999  Daniel Jacobowitz <dan@debian.org>
  > 
  > 	* config/rs6000/sysv4.h (CPP_OS_LINUX_SPEC): Fix conditions
  > 	for -Dunix and -Dlinux, and remove duplicate definition. 
  > 	Change -Asystem(linux) to -Asystem(posix).
  > 	(CPP_OS_SOLARIS_SPEC): Fix conditions for -Dunix, -Dsun,
  > 	-DSVR4, -D__EXTENSIONS__.
  > 
  > 	* config/rs6000/linux.h (CPP_PREDEFINES): Remove -Dunix,
  > 	-Dlinux, -Asystem(linux), and -Asystem(unix).
Thanks.  Installed!

jeff