Take the source directory as a parameter in all_tests.sh

Remove the assumption that the build directory is a subdirectory of the source
directory.

Change-Id: Iab89e4165b3ee2f9337bcc6e76a48c8fb94a0b92
Reviewed-on: https://boringssl-review.googlesource.com/1417
Reviewed-by: Adam Langley <agl@google.com>
1 file changed