split all-test into per-arch builds

developers just want to build a single arch, and reduce build system
utilization.  test-single-arch does this, and all-test calls it for
both arches.
add a repo for Jordan
add new test to expected failures
fix typo in build spec for daily build
add new expected crashes for daily test.
piglit.spec.glsl-es-3_00.compiler.undef-GL_ES no longer fails
forgot to remove chv test from expected-fails.
add libcaca, since if a builder has it, all testers have to have it.
move piglit.spec.OES_fixed_point.attribute-arrays to fail from crash
Use jenkins.py to schedule builds, not build_jenkins.py script
add a summary table of all git revisions and commit messages.