Revert "reposync: only print updated repos during sync"

This reverts commit 3a4119ded7eecdb95df24e598b31a3697ce4da83.
build: use the system's ccache by default

ccache 3.x supports direct mode (http://ccache.samba.org/manual.html#_the_direct_mode)
This is not supported in the prebuilt version.
Direct mode has been shown to decrease build time compared to the ccache in prebuilts

Note: this will require your cache to be recreated

Change-Id: Ib146011a3330637c2d306d329fcb39cea058ff12
Allow devices to specify certain ro. props via TARGET_INIT_VENDOR_LIB

This modifies buildinfo.sh to not set model, name, description, and
fingerprint in build.prop. These can then be set via custom init
lib.
This also fixes ota_from_target_files to function without these
props being preset.

Change-Id: I945b2c38e60b207d2d0f82b34f4f230ac21b0657

Conflicts:
	tools/releasetools/ota_from_target_files

	modified:   core/Makefile
	modified:   tools/buildinfo.sh
	modified:   tools/releasetools/ota_from_target_files
Merge remote-tracking branch 'ls/kitkat' into kitkat