Improve use of CHECK macros.
Improve use of CHECK macros.

Motivated by a bogus compiler warning for debug with O2, switch from
CHECK(x < y) to the recommended CHECK_LT(x, y). Fix bug in
RosAlloc::Initialize where an assignment was being performed within
a DCHECK.

Change-Id: Iaf466849ae79ae1497162e81a3e092bf13109aa9

treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst