i386 constant data alignment patch

[Jeffrey A Law]

  In message < 199805172130.RAA03323@jwlab.FEITH.COM >you write:
  > Hello,
  > 
  > This change implements the alignment of constant data following
  > the recommendations of the "Intel Architecture Optimization Manual".
  > 
  > ChangeLog:
  > 
  > Sun May 17 17:21:26 EDT 1998  John Wehle  (john@feith.com)
  > 
  > 	* i386.h (ALIGN_DFmode): Delete.
  > 	(CONSTANT_ALIGNMENT): Define.
  > 	* varasm.c (force_const_mem): Use it.
Installed.

Thanks!
jeff