build: Store no_separate_recovery flag in misc_info

This may be needed during a signing process.

Change-Id: I0ab6f0e615f64c0529e605c2fa62fabf1b1ec52b
build: Handle boot images with custom makefile properly

When a pre-built image should be used, it should be stored in the
target files zip so that it can be used with external signing
processes.

Change-Id: I2661af9ac58af30bb9314b552775046d3abf44e0
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0