Revert "Rename programs to instruction_processors (#3789)" (#3824)

This reverts commit 34344982a9.

programs/failure_program/tests/failure.rs

@@ -0,0 +1,29 @@
+use solana_runtime::bank::Bank;
+use solana_runtime::bank_client::BankClient;
+use solana_runtime::loader_utils::{create_invoke_instruction, load_program};
+use solana_sdk::client::SyncClient;
+use solana_sdk::genesis_block::GenesisBlock;
+use solana_sdk::instruction::InstructionError;
+use solana_sdk::native_loader;
+use solana_sdk::signature::KeypairUtil;
+use solana_sdk::transaction::TransactionError;
+
+#[test]
+fn test_program_native_failure() {
+    let (genesis_block, alice_keypair) = GenesisBlock::new(50);
+    let bank = Bank::new(&genesis_block);
+    let bank_client = BankClient::new(bank);
+
+    let program = "solana_failure_program".as_bytes().to_vec();
+    let program_id = load_program(&bank_client, &alice_keypair, &native_loader::id(), program);
+
+    // Call user program
+    let instruction = create_invoke_instruction(alice_keypair.pubkey(), program_id, &1u8);
+    assert_eq!(
+        bank_client
+            .send_instruction(&alice_keypair, instruction)
+            .unwrap_err()
+            .unwrap(),
+        TransactionError::InstructionError(0, InstructionError::GenericError)
+    );
+}