Build: build Email and Exchange again

Apps where we are working on + revamps for LP

and a lot are still using it, especially for business.

Change-Id: I26558d0f6096cf9eae996e30f8fa55b8abd56da6
Slim the product packages down a little

Change-Id: Id5866ed4041601553ca855e52058c3d050b42483
Revert "Fix --block"

This reverts commit 5a1c2a4317e4cc308c5b6032ccefeb4bd1e56ccc.

Change-Id: I8f7a74a06482730b2d94fc8197429cce45de5fe9
Slimify a few scripts

Change-Id: I924bc6529def277e72d9931134e77e610b92f6ea
Re-enable backuptool for SLIM_BUILD's

Change-Id: I2a392417a45094b826b1c2745680ba25f689b2ad
Merge remote-tracking branch 'slim/lp5.0' into lp50s-test

Conflicts:
	target/product/full_base.mk
	target/product/generic_no_telephony.mk