Add zbench.sh and zfuzz.sh scripts

The scripts wrap internal/tool/bench and internal/tool/fuzz and
makes it easier to invoke those tools from the repository root.

Author: dsnet

zbench.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+#
+# Copyright 2017, Joe Tsai. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE.md file.
+
+# zbench wraps internal/tool/bench and is useful for comparing benchmarks from
+# the implementations in this repository relative to other implementations.
+#
+# See internal/tool/bench/main.go for more details.
+cd $(dirname "${BASH_SOURCE[0]}")/internal/tool/bench
+go run $(go list -f '{{ join .GoFiles "\n" }}') "$@"

zfuzz.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+#
+# Copyright 2017, Joe Tsai. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE.md file.
+
+# zfuzz wraps internal/tool/fuzz and is useful for fuzz testing each of
+# the implementations in this repository.
+cd $(dirname "${BASH_SOURCE[0]}")/internal/tool/fuzz
+./fuzz.sh "$@"

zprof.sh

@@ -8,7 +8,7 @@ if [ $# == 0 ]; then
 	echo "Usage: $0 PKG_PATH TEST_ARGS..."
 	echo ""
 	echo "Runs coverage and performance benchmarks for a given package."
-	echo "The results are stored in the _zprof_ directory"
+	echo "The results are stored in the _zprof_ directory."
 	echo ""
 	echo "Example:"
 	echo "	$0 flate -test.bench=Decode/Twain/Default"