HipByte/RubyMotion — pull request #9 by Watson1978 (2012-06-14 07:13:39+00:00)
Title: add cpu_types for iOS SDK 4.3

When use the iOS SDK 4.3, App will be linked ARMv6 and ARMv7 binary.
However, link error ocurrs when use static libraries which only contain ARMv7 (or ARMv6) as vendor library.

```
$ rake device
Build ./build/iPhoneOS-4.3-Development
Build vendor/foo
Compile ./app/app_delegate.rb
Create ./build/iPhoneOS-4.3-Development/LibTest.app
Link ./build/iPhoneOS-4.3-Development/LibTest.app/LibTest
ld: in /Users/watson/Documents/RubyMotion/LibTest/vendor/foo/libfoo.a, file is universal but does not contain a(n) armv6 slice for architecture armv6
collect2: ld returned 1 exit status
lipo: can't open input file: /var/folders/1z/ff7x15cj7vb24rl38ty0y52w0000gn/T//ccq4Hey1.out (No such file or directory)
rake aborted!
Command failed with status (1): [/Applications/Xcode.app/Contents/Developer...]

Tasks: TOP => device => archive:development
(See full trace by running task with --trace)
```

So, we need to specify cpu types for using its library.