Our default rules tend to shove asm code through cpp, so comments

starting with hashes have a sub-optimal impact. This change adds
/* */ around the block comment in the header of each file to make
them friendly to cpp. Also added an Id keyword cause I like to
see revision numbers in source.

contrib/libgmp/mpn/alpha/add_n.s

@@ -1,3 +1,4 @@
+/* $Id$
  # Alpha __mpn_add_n -- Add two limb vectors of the same length > 0 and
  # store sum in a third limb vector.
 
@@ -26,6 +27,7 @@
  # s1_ptr	$17
  # s2_ptr	$18
  # size		$19
+*/
 
 	.set	noreorder
 	.set	noat

contrib/libgmp/mpn/alpha/addmul_1.s

@@ -1,3 +1,4 @@
+/* $Id$
  # Alpha 21064 __mpn_addmul_1 -- Multiply a limb vector with a limb and add
  # the result to a second limb vector.
 
@@ -28,6 +29,7 @@
  # s2_limb	r19
 
  # This code runs at 42 cycles/limb on EV4 and 18 cycles/limb on EV5.
+*/
 
 	.set	noreorder
 	.set	noat

contrib/libgmp/mpn/alpha/lshift.s

@@ -1,3 +1,4 @@
+/* $Id$
  # Alpha 21064 __mpn_lshift --
 
  # Copyright (C) 1994, 1995 Free Software Foundation, Inc.
@@ -35,6 +36,7 @@
  # 1. ldq has a 3 cycle delay, srl and sll have a 2 cycle delay.
  # 2. Only aligned instruction pairs can be paired.
  # 3. The store buffer or silo might not be able to deal with the bandwidth.
+*/
 
 	.set	noreorder
 	.set	noat

contrib/libgmp/mpn/alpha/mul_1.s

@@ -1,3 +1,4 @@
+/* $Id$
  # Alpha 21064 __mpn_mul_1 -- Multiply a limb vector with a limb and store
  # the result in a second limb vector.
 
@@ -37,6 +38,7 @@
  # between RES_PTR and S1_PTR.  Maybe we can simply divide the current
  # loop into an inner and outer loop, having the inner loop handle
  # exactly one prefetch block?
+*/
 
 	.set	noreorder
 	.set	noat

contrib/libgmp/mpn/alpha/rshift.s

@@ -1,3 +1,4 @@
+/* $Id$
  # Alpha 21064 __mpn_rshift --
 
  # Copyright (C) 1994, 1995 Free Software Foundation, Inc.
@@ -35,6 +36,7 @@
  # 1. ldq has a 3 cycle delay, srl and sll have a 2 cycle delay.
  # 2. Only aligned instruction pairs can be paired.
  # 3. The store buffer or silo might not be able to deal with the bandwidth.
+*/
 
 	.set	noreorder
 	.set	noat

contrib/libgmp/mpn/alpha/sub_n.s

@@ -1,3 +1,4 @@
+/* $Id$
  # Alpha __mpn_sub_n -- Subtract two limb vectors of the same length > 0 and
  # store difference in a third limb vector.
 
@@ -26,6 +27,7 @@
  # s1_ptr	$17
  # s2_ptr	$18
  # size		$19
+*/
 
 	.set	noreorder
 	.set	noat

contrib/libgmp/mpn/alpha/submul_1.s

@@ -1,3 +1,4 @@
+/* $Id$
  # Alpha 21064 __mpn_submul_1 -- Multiply a limb vector with a limb and
  # subtract the result from a second limb vector.
 
@@ -28,6 +29,7 @@
  # s2_limb	r19
 
  # This code runs at 42 cycles/limb on EV4 and 18 cycles/limb on EV5.
+*/
 
 	.set	noreorder
 	.set	noat

contrib/libgmp/mpn/alpha/udiv_qrnnd.S

@@ -1,3 +1,4 @@
+/* $Id$
  # Alpha 21064 __udiv_qrnnd
 
  # Copyright (C) 1992, 1994, 1995 Free Software Foundation, Inc.
@@ -18,6 +19,7 @@
  # along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
  # the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  # MA 02111-1307, USA.
+*/
 
 
         .set noreorder