Implement shlib checks for all pkg revdeps in the transaction.

Added three new test cases to verify its correctness.

lib/transaction_dictionary.c

@@ -290,8 +290,11 @@ xbps_transaction_prepare(struct xbps_handle *xhp)
 		xhp->transd = NULL;
 		return rv;
 	}
+	/*
+	 * Check for unresolved shared libraries.
+	 */
 	if (xbps_transaction_shlibs(xhp))
-		return ENODEV;
+		return ENOEXEC;
 
 	/*
 	 * Sort package dependencies if necessary.