Floating point exceptions are enabled for __x86_64__ on all operation

systems, but the code that take care of them is inly implemented
on Linux.  This made the build go into an infinite loop on NetBSD.

Disable floating point exceptions on NetBSD/amd64 for now, until
I get around implementing and testing the necessary sigaction glue.

lang/erlang/distinfo

@@ -1,7 +1,9 @@
-$NetBSD: distinfo,v 1.5 2005/12/30 10:32:16 ghen Exp $
+$NetBSD: distinfo,v 1.6 2006/01/01 18:24:58 kristerw Exp $
 
 SHA1 (erlang/otp_src_R10B-9.tar.gz) = 2255209fca6101e39d7e3d5af2c074239e29d79d
 RMD160 (erlang/otp_src_R10B-9.tar.gz) = e92b655d3250a6dd4c11106fbc0fb0626a5cf6e9
 Size (erlang/otp_src_R10B-9.tar.gz) = 9961340 bytes
 SHA1 (patch-aa) = 43eb492a22462442e3f717ee32056df11d1a0e43
 SHA1 (patch-ab) = ced331e223b3b1de88426de5f18fe066ca8be028
+SHA1 (patch-ac) = f584b213db636f3be29fb4f99b9cfb85ee9374ad
+SHA1 (patch-ad) = 180db5c15a1c238773288e842f86c102614ba2a6

lang/erlang/patches/patch-ac

@@ -0,0 +1,13 @@
+$NetBSD: patch-ac,v 1.3 2006/01/01 18:24:58 kristerw Exp $
+
+--- erts/configure.orig	2006-01-01 17:45:43.000000000 +0100
++++ erts/configure	2006-01-01 17:46:23.000000000 +0100
+@@ -5724,7 +5724,7 @@
+     __asm__ __volatile__("fldcw %0" : : "m"(cw));
+ }
+ 
+-#if defined(__x86_64__)
++#if defined(__x86_64__) && !defined(__NetBSD__)
+ static void unmask_sse2(void)
+ {
+     unsigned int mxcsr;

lang/erlang/patches/patch-ad

@@ -0,0 +1,13 @@
+$NetBSD: patch-ad,v 1.1 2006/01/01 18:24:58 kristerw Exp $
+
+--- erts/emulator/sys/unix/sys_float.c.orig	2006-01-01 17:46:42.000000000 +0100
++++ erts/emulator/sys/unix/sys_float.c	2006-01-01 17:47:07.000000000 +0100
+@@ -52,7 +52,7 @@
+     __asm__ __volatile__("fldcw %0" : : "m"(cw));
+ }
+ 
+-#if defined(__x86_64__)
++#if defined(__x86_64__) && !defined(__NetBSD__)
+ static void unmask_sse2(void)
+ {
+     unsigned int mxcsr;