Updating OSX packaging script

-Adding a shell script to build a distributable app for OSX.
-Updating py2app script to use icon, set title etc.
-Removing build generated files from repo and ignoring in .gitignore.
-Couple of minor issues on OSX.
--multiprocessing.Queue.qwait isn't implemented for some unix platforms, so using multiprocessing.Queue.empty instead.
--use correct path on OSX to load images.

.gitignore

@@ -1 +1,2 @@
-*.pyc
+*.pyc
+osx_build/

packaging_scripts/buildOSXApp.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+cd plumbing
+python py2app_setup.py py2app
+
+# workaround for now to strip out 64 bit libs as wxPython only supports 32 bit
+cd ../../osx_dist
+mv PythonTurtle.app PythonTurtle64.app
+ditto --rsrc --arch i386 PythonTurtle64.app PythonTurtle.app
+rm -rf PythonTurtle64.app

packaging_scripts/plumbing/osx_resources/Info.plist

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDisplayName</key>
+	<string>PythonTurtle</string>
+	<key>CFBundleExecutable</key>
+	<string>PythonTurtle</string>
+	<key>CFBundleIdentifier</key>
+	<string>org.pythonmac.unspecified.pythonturtle</string>
+	<key>CFBundleName</key>
+	<string>PythonTurtle</string>
+	<key>CFBundleShortVersionString</key>
+	<string>0.1</string>
+	<key>CFBundleVersion</key>
+	<string>0.1</string>
+	<key>LSArchitecturePriority</key>
+	<array>
+		<string>i386</string>
+	</array>
+</dict>
+</plist>

packaging_scripts/plumbing/py2app_setup.py

@@ -2,18 +2,37 @@
 This is a setup.py script generated by py2applet
 
 Usage:
-    python setup.py py2app
+    python py2app_setup.py py2app
 """
 
+import os
 from setuptools import setup
+from pythonturtlebuildtools import smart_join, data_files
 
-APP = ['pythonturtle.py']
-DATA_FILES = []
-OPTIONS = {'argv_emulation': True}
+cwd = os.getcwd()
+root_dir = smart_join(cwd, "..", "..")
+src_dir = smart_join(root_dir, "src")
+build_dir = smart_join(cwd, "osx_build")
+dist_dir = smart_join(root_dir, "osx_dist")
+resources_dir = smart_join(src_dir, "resources")
+osx_resources_dir = smart_join(cwd, "osx_resources")
+path_to_script = smart_join(src_dir, "pythonturtle.py")
+path_to_icon = smart_join(resources_dir, "icon.icns")
+path_to_plist = smart_join(osx_resources_dir, "Info.plist")
+
+py2app_options = {
+    'arch': 'i386',
+    'argv_emulation': True,
+    'bdist_base': build_dir,
+    'dist_dir': dist_dir,
+    'iconfile': path_to_icon,
+    'includes': 'wx',
+    'plist': path_to_plist,
+}
 
 setup(
-    app=APP,
-    data_files=DATA_FILES,
-    options={'py2app': OPTIONS},
-    setup_requires=['py2app'],
-)
+    app=[path_to_script],
+    data_files=data_files(resources_dir),
+    options={'py2app': py2app_options},
+    setup_requires=['py2app', 'wxPython'],
+)

packaging_scripts/plumbing/pythonturtlebuildtools.py

@@ -0,0 +1,15 @@
+import os
+
+def smart_join(*args):
+    temp = os.path.join(*args)
+    optimized = os.path.realpath(temp)
+    return str(optimized) # to convert from unicode to ascii
+
+def data_files(resources_dir):
+    data_files=[]
+    for file in os.listdir(resources_dir):
+        f1 = smart_join(resources_dir, file)
+        if os.path.isfile(f1): # skip directories
+            f2 = 'resources', [f1]
+            data_files.append(f2)
+    return data_files