[vms/committed]: no parameters for .prologue

[Tristan Gingold]

Hi,

on alpha VMS, the .prologue accepted one absolute expression.  But this was not documented and was ignored.
This patch now enforce the no parameter policy.

Tristan.

gas/
2011-11-23  Tristan Gingold  <gingold@adacore.com>

	* config/tc-alpha.c (s_alpha_prologue): Requires empty line.

Index: config/tc-alpha.c
===================================================================
RCS file: /cvs/src/src/gas/config/tc-alpha.c,v
retrieving revision 1.101
diff -c -r1.101 tc-alpha.c
*** config/tc-alpha.c	23 Nov 2011 11:27:51 -0000	1.101
--- config/tc-alpha.c	23 Nov 2011 11:30:34 -0000
***************
*** 4471,4477 ****
  static void
  s_alpha_prologue (int ignore ATTRIBUTE_UNUSED)
  {
-   get_absolute_expression ();
    demand_empty_rest_of_line ();
    alpha_prologue_label = symbol_new
      (FAKE_LABEL_NAME, now_seg, (valueT) frag_now_fix (), frag_now);
--- 4471,4476 ----