Make 5.1.0 the default

After a few months of testing 5.1.0 appears to be stable and working
well. It is a recommended upgrade by the jemalloc team.

Closes mojodna#2

Author: gaffneyc

Makefile

@@ -1,6 +1,6 @@
 default: cedar-14 heroku-16 heroku-18
 
-VERSION := 5.0.1
+VERSION := 5.1.0
 ROOT_DIR := $(shell dirname $(abspath $(lastword $(MAKEFILE_LIST))))
 
 clean:

README.md

@@ -56,13 +56,13 @@ Set this to select or pin to a specific version of jemalloc. The default is to
 use the latest stable version if this is not set. You will receive an error
 mentioning tar if the version does not exist.
 
-**Default**: `5.0.1`
+**Default**: `5.1.0`
 
 **note:** This setting is only used during slug compilation. Changing it will
 require a code change to be deployed in order to take affect.
 
 ```console
-heroku config:set JEMALLOC_VERSION=5.0.1
+heroku config:set JEMALLOC_VERSION=3.6.0
 ```
 
 #### Available Versions
@@ -88,7 +88,7 @@ This uses Docker to build against Heroku
 [stack-image](https://github.com/heroku/stack-images)-like images.
 
 ```console
-make VERSION=5.0.1
+make VERSION=5.1.0
 ```
 
 Artifacts will be dropped in `dist/` based on Heroku stack and jemalloc version.

bin/compile

@@ -8,7 +8,7 @@ CACHE_DIR=$2
 ENV_DIR=$3
 
 # Default version
-version="5.0.1"
+version="5.1.0"
 
 # Read version from configured JEMALLOC_VERSION
 if [ -f $ENV_DIR/JEMALLOC_VERSION ]; then
@@ -18,7 +18,7 @@ fi
 url="https://github.com/gaffneyc/heroku-buildpack-jemalloc/releases/download/$STACK/jemalloc-$version.tar.bz2"
 dest="$BUILD_DIR/vendor/jemalloc"
 
-echo "-----> Vendoring jemalloc"
+echo "-----> Vendoring jemalloc $version"
 echo "       Fetching $url"
 
 mkdir -p $dest