chore: checkpoint before Python removal

vendor/salsa20/benches/mod.rs

@@ -0,0 +1,26 @@
+#![feature(test)]
+extern crate test;
+
+cipher::stream_cipher_bench!(
+    salsa20::Salsa8;
+    salsa8_bench1_16b 16;
+    salsa8_bench2_256b 256;
+    salsa8_bench3_1kib 1024;
+    salsa8_bench4_16kib 16384;
+);
+
+cipher::stream_cipher_bench!(
+    salsa20::Salsa12;
+    salsa12_bench1_16b 16;
+    salsa12_bench2_256b 256;
+    salsa12_bench3_1kib 1024;
+    salsa12_bench4_16kib 16384;
+);
+
+cipher::stream_cipher_bench!(
+    salsa20::Salsa20;
+    salsa20_bench1_16b 16;
+    salsa20_bench2_256b 256;
+    salsa20_bench3_1kib 1024;
+    salsa20_bench4_16kib 16384;
+);