Add //build/config:exe_and_shlib_deps

This CL adds a new target that all executables and shared libraries
should depend on in preparation for adding a dependency on libc++.  It
also changes "component" to reference this new target instead of
//build/config/sanitizers:deps.

BUG=723069
R=dpranke@chromium.org,thakis@chromium.org,brettw@chromium.org

Review-Url: https://codereview.chromium.org/2888713003
Cr-Commit-Position: refs/heads/master@{#472940}
2 files changed