llvm 3.5.0

Closes #32389.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
llvm: fix build on 10.7 and 10.8

Closes #32495.
llvm: update 3.5.0 bottle.
pgrouting: boost 1.56 compatibility
pgrouting: add 2.0.0 bottle.