Should we build dependencies as static and link them to the Core target to improve launch times?

[n8chur]

This should increase application launch times significantly as the number of dependencies increases.

In theory this should be as easy as:

1. Write a script that creates a temporary.xcconfig file that contains MACH_O_TYPE = staticlib and then $ export XCODE_XCCONFIG_FILE="$xcconfig" before running carthage build
2. In the project.yml reference the dependency file directly with framework: Carthage/Build/iOS/Static/XXX.framework of carthage: xxx
3. Add -all_load to the Core target's OTHER_LDFLAGS build setting (OTHER_LDFLAGS = $(inherited) -all_load in the Core target's .xcconfig)

[n8chur]

I started working on this on the static-core branch.

[n8chur]

I'm not seeing an improvement in launch times. I'll have to try this again once more dependencies are added.