Removing forgotten, useless, renegade defines

Change-Id: I3ff12b42e2815c8f3d72bb577a58552f3a0dc662
Simplification in drivers/ramdisk

Periods are allowed in Make variable names, which let us simplify
a bit the Makefile.

Based on a proposition by Antoine LECA

Change-Id: I759d7dc7721905a4775e8ab28e0371e48a443f25
Fix permissions for term(1)

LSC: Small correction, using the group name is not secure in cross-build
     setups, replaced by the numerical gid to ensure proper operation.

Change-Id: I7657b77f29eaa513fe24d8c4e2eb6de9afd53950