* Rewrite cc_test to take named arguments
Cut down on build file verbosity by having cc_test take SOURCES and
DEPENDS. The separate invocation of target_link_libraries is no longer
necessary.
* Add a cc_library rule to parallel cc_test
This cuts down on build file verbosity.
* Automatically add OBJC_FLAGS to cc_libraries if applicable
* Exclude platform-specific libraries from 'all'
This is makes it possible to declare this kind of library
unconditionally. Usage within a test or as a dependency will actually
trigger building.
* Restore secure_random_test.cc; clean-up comments
Gil