r 3.1.2_1: Install shared libraries for Linuxbrew

Add --enable-R-shlib
express 1.5.1: New formula

eXpress is a streaming tool for quantifying the abundances of a set of
target sequences from sampled subsequences.

Closes #1485.

Signed-off-by: Shaun Jackman <sjackman@gmail.com>
express: add 1.5.1 bottle.
Update Ceres Solver to latest stable version
ceres-solver: add 1.10.0 bottle.