[patch] weak symbol support for pa

[Jeffrey A Law]

  In message < 200002232114.NAA28282@cygint.cygnus.com >you write:
  > The following patch implements weak symbol support for the
  > pa.  Okay to commit?
  > 
  > Catherine
  > 
  > 	* config/pa/pa.h (MAKE_DECL_ONE_ONLY): Define.
  > 	(ASM_WEAKEN_LABEL): Define.
For current sources this stuff needs to go into pa/som.h.  The ELF based
targets pick up this (and other stuff) via svr4.h.

It's otherwise OK.

jeff