Port cipher_test to file_test.

Derived from upstream's new evp_test. The tests were taken from upstream
but tweaked so the diff from the old cipher_test.txt is more obvious.

Change-Id: Ic82593a8bb6aaee9b69fdc42a8b75516b03c1c5a
Reviewed-on: https://boringssl-review.googlesource.com/4707
Reviewed-by: Adam Langley <agl@google.com>
5 files changed