[OSX] Sign embedded frameworks individually.
[OSX] Sign embedded frameworks individually.

Fixes http://hipbyte.myjetbrains.com/youtrack/issue/RM-642

incbee/RubyMotion,katsuyoshi/RubyMotion,katsuyoshi/RubyMotion,jjaffeux/RubyMotion,HipByte/RubyMotion,incbee/RubyMotion,beni55/RubyMotion,hboon/RubyMotion,beni55/RubyMotion,beni55/RubyMotion,beni55/RubyMotion,hboon/RubyMotion,HipByte/RubyMotion,jjaffeux/RubyMotion,katsuyoshi/RubyMotion,jjaffeux/RubyMotion,katsuyoshi/RubyMotion,incbee/RubyMotion,incbee/RubyMotion,hboon/RubyMotion,jjaffeux/RubyMotion,HipByte/RubyMotion