dev86: update to 0.16.18 and make it build on x86_64 FINALLY!

srcpkgs/dev86/patches/dev86-overflow.patch

@@ -0,0 +1,24 @@
+diff -up dev86-0.16.17/bcc/bcc.c.overflow dev86-0.16.17/bcc/bcc.c
+--- dev86-0.16.17/bcc/bcc.c.overflow	2005-01-03 23:41:55.000000000 +0100
++++ dev86-0.16.17/bcc/bcc.c	2009-02-19 10:49:32.000000000 +0100
+@@ -16,6 +16,7 @@
+  *	-M0	A framework for the -B option.
+  */
+ #include <stdio.h>
++#include <limits.h>
+ #ifdef __STDC__
+ #include <stdlib.h>
+ #ifndef MSDOS
+@@ -1308,11 +1309,7 @@ void reset_prefix_path()
+ 
+       for(d=s=ptr; d && *s; s=d)
+       {
+-#ifdef MAXPATHLEN
+-         char buf[MAXPATHLEN];
+-#else
+-         char buf[1024];
+-#endif
++         char buf[PATH_MAX];
+ 
+ 	 free(temp);
+          d=strchr(s, ':');