openpgp, openpgp-ffi: Normalize TPK::revoked()

  - `TPK::revoked` returns a revocation status, not a boolean.  Rename
    it to `TPK::revocation_status()`, like it is called in the FFI.

  - Like other methods, provide a `foo_at()` method and a `foo()`
    method.

1 files changed, 3 insertions, 1 deletions

diff --git a/sqv/src/sqv.rs b/sqv/src/sqv.rs
index 1ab6568d..873ca9e8 100644
--- a/sqv/src/sqv.rs
+++ b/sqv/src/sqv.rs
@@ -273,7 +273,9 @@ fn real_main() -> Result<(), failure::Error> {
                                     }
                                 }
 
-                                if tpk.revoked(t) != RevocationStatus::NotAsFarAsWeKnow {
+                                if tpk.revocation_status_at(t)
+                                    != RevocationStatus::NotAsFarAsWeKnow
+                                {
                                     eprintln!(
                                         "Primary key was revoked when the \
                                          signature was created.");