Don't define _ANSI_SOURCE for NetBSD.

Submitted by: Eric Ding <ericding@MIT.EDU>
diff --git a/Configure b/Configure
index 7603301..04fc4d4 100755
--- a/Configure
+++ b/Configure
@@ -176,7 +176,7 @@
 "linux-sparc64","gcc:-DB_ENDIAN -DTERMIO -O3 -fomit-frame-pointer -mv8 -Wall::-D_REENTRANT:::::",
 "NetBSD-sparc",	"gcc:-DTERMIOS -O3 -fomit-frame-pointer -mv8 -Wall -DB_ENDIAN::(unknown)::BN_LLONG MD2_CHAR RC4_INDEX DES_UNROLL:::",
 "NetBSD-m68",	"gcc:-DTERMIOS -O3 -fomit-frame-pointer -Wall -DB_ENDIAN::(unknown)::BN_LLONG MD2_CHAR RC4_INDEX DES_UNROLL:::",
-"NetBSD-x86",	"gcc:-DTERMIOS -D_ANSI_SOURCE -O3 -fomit-frame-pointer -m486 -Wall::(unknown)::BN_LLONG $x86_gcc_des $x86_gcc_opts:",
+"NetBSD-x86",	"gcc:-DTERMIOS -O3 -fomit-frame-pointer -m486 -Wall::(unknown)::BN_LLONG $x86_gcc_des $x86_gcc_opts:",
 #"FreeBSD",   "gcc:-DTERMIOS -DL_ENDIAN -D_ANSI_SOURCE -fomit-frame-pointer -O3 -m486 -Wall:(unknown)::BN_LLONG $x86_gcc_des $x86_gcc_opts:$x86_out_asm",
 "FreeBSD",      "gcc:-DTERMIOS -DL_ENDIAN -fomit-frame-pointer -O3 -m486 -Wall::(unknown)::BN_LLONG $x86_gcc_des $x86_gcc_opts:$x86_out_asm",
 "FreeBSD-elf",  "gcc:-DTERMIOS -DL_ENDIAN -fomit-frame-pointer -O3 -m486 -Wall::(unknown)::BN_LLONG $x86_gcc_des $x86_gcc_opts:$x86_elf_asm",