patch for cofflink.c [take 2]

[Nick Clifton]

Hi Mark,

: 2000-07-03  Mark Elbrecht  <snowball3@bigfoot.com>
: 
: 	* cofflink.c (_bfd_coff_write_global_sym): Turn a weak symbol into
: 	  an external symbol for a non-shared, non-relocatable link.

Approved and applied.

I also took the liberty of turning the test for a weak external symbol
into a macro, since exactly the same code is used several time
elsewhere in the file.

Cheers
	Nick