system.prop: remove ro.secure=0

...since it doesn't seem to have any effect on what getprop returns

Change-Id: Idb2a805fb32e752297b2e1a40c145b65cccbf5b7
init.spade.rc: restart adb on adb root

Based on:
https://github.com/CyanogenMod/android_device_htc_m7-common/commit/e0713c4bd1d3364826052e41a19abdff39041889

Change-Id: I9251905f8bd54ec38aa6d91d3992b34e608843a8

Conflicts:
	ramdisk/init.spade.rc
Turn off BLE, GATT, and SMP of Bluetooth stack (AOSP)

In preparation for jb-mr2-release.

Based on:
https://android.googlesource.com/device/samsung/maguro/+/b40835e5ba7c62565499a87ee0e2b8663e2fb1b2

Change-Id: Ia5250154ee1f852f50fbf90428462a00e0175cbf