Fix node v0.2.x compatibility

require.resolve is a new feature. v0.3.x is going stable soon, after
which support for v0.2.x will dwindle. This also fixes 32-bit building
on some platforms.

Closes gh-7

fibers.js

@@ -1,12 +1,12 @@
 var fs = require('fs');
 
 if (fs.statSync(process.execPath).mtime >
-    fs.statSync(require.resolve('./src/fibers')).mtime) {
+    fs.statSync(__dirname + '/src/fibers')).mtime) {
   throw new Error(
     '`node` has a newer mtime than `fiber`; it is possible your build is out of date. This ' +
     'could happen if you upgrade node. Try `npm rebuild fibers` to rebuild. If that doesn\'t ' +
-    'work you could consider running `touch ' + require.resolve('./src/fibers') + '` and maybe ' +
-    'there won\'t be a problem.');
+    'work you could consider running `touch ' + __dirname + 'src/fibers` and maybe there won\'t ' +
+    'be a problem.');
 } else if (!process.env.FIBER_SHIM) {
   throw new Error(
     'Fiber support was not enabled when you ran node. To enable support for fibers, please run ' +

package.json

@@ -1,6 +1,6 @@
 {
   "name": "fibers",
-  "version": "0.1.1",
+  "version": "0.1.3",
   "description": "Cooperative multi-tasking for Javascript; or, the closest thing to a thread you'll see in node",
   "keywords": ["fiber", "fibers", "coroutine", "thread", "async", "parallel", "worker"],
   "homepage": "https://github.com/laverdet/node-fibers",

src/platform.mk

@@ -10,6 +10,9 @@ else
   CPPFLAGS += -g -O3 -minline-all-stringops
 endif
 
+ifeq ($(NODE_BITS), )
+  CPPFLAGS += -m32
+endif
 ifeq ($(NODE_BITS), 32)
   CPPFLAGS += -m32
 endif