Support for more BSDs

This adds trivial support for more BSD variants: NetBSD and OpenBSD.

Author: bsiegert

src/lib.rs

@@ -87,6 +87,12 @@ impl Build {
             _ if target.contains("freebsd") => {
                 config.define("LUA_USE_LINUX", None);
             }
+            _ if target.contains("netbsd") => {
+                config.define("LUA_USE_LINUX", None);
+            }
+            _ if target.contains("openbsd") => {
+                config.define("LUA_USE_LINUX", None);
+            }
             _ if target.contains("apple-darwin") => {
                 match version {
                     Lua51 => config.define("LUA_USE_LINUX", None),