make sure to create the tmp directory before testing and remove the listener warning in node v0.4

Makefile

@@ -13,9 +13,11 @@ db:
 
 ifndef only
 test: build db
+	@rm -rf ./test/tmp && mkdir -p ./test/tmp
 	@expresso -I lib test/*.test.js
 else
 test: build db
+	@rm -rf ./test/tmp && mkdir -p ./test/tmp
 	@expresso -I lib test/${only}.test.js
 endif
 

test/prepare.test.js

@@ -2,6 +2,8 @@ var sqlite3 = require('sqlite3');
 var assert = require('assert');
 var Step = require('step');
 
+if (process.setMaxListeners) process.setMaxListeners(0);
+
 exports['test simple prepared statement with invalid SQL'] = function(beforeExit) {
     var error = false;
     var db = new sqlite3.Database(':memory:');