Test install and build against installed library

[crtrott]

This will be done by building all things inside the example directory against an installed library during testing (i.e. install the library first in a "lib" directory inside the directory where kokkos/generate_makefile.bash was called, and then build all the example things against that instead of doing an inline build of the library). This will also reduce total testing time.

[crtrott]

Here are the new timings:

Serial: 1:16 1:11
Threads: 1:32 1:22
OpenMP: 1:34 1:17
Cuda: 3:55 3:43

[crtrott]

This is the old build time values before I started working on this and #484 :

OpenMP: 4:47
Cuda: 13:40

Looks like we got a 3-4x improvement in build times from this.