Codesign embedded_frameworks for OS X too (was: [OS X] Add codesign_frameworks to configuration. Use it to specify which frameworks to codesign)

[hboon]

Use it like this:

app.codesign_frameworks << 'Sparkle.framework'

Relevant:

• TN2206 OS X Code Signing In Depth – Signing Frameworks
• http://furbo.org/2013/10/17/code-signing-and-mavericks/

[Watson1978]

I think app.embedded_frameworks should do code-signing on also OSX platform like iOS platform instead of introducing codesign_frameworks.

[hboon]

Great idea. I forgot iOS now supports embedded_frameworks.

Here's a patch.