Add Python 2.7.15 to the list of runtimes (#692)

* Add Python 2.7.15 to the list of runtimes

Closes #691

* Update the default Python 2 to 2.7.15 everywhere

bin/compile

@@ -42,7 +42,7 @@ export VENDOR_URL
 # Python defaults
 DEFAULT_PYTHON_VERSION="python-3.6.4"
 LATEST_3="python-3.6.4"
-LATEST_2="python-2.7.14"
+LATEST_2="python-2.7.15"
 
 DEFAULT_PYTHON_STACK="cedar-14"
 PIP_UPDATE="9.0.2"

builds/runtimes/python-2.7.15

+#!/usr/bin/env bash
+# Build Path: /app/.heroku/python/
+# Build Deps: libraries/sqlite
+
+OUT_PREFIX=$1
+
+echo "Building Python…"
+SOURCE_TARBALL='https://python.org/ftp/python/2.7.15/Python-2.7.15.tgz'
+curl -L $SOURCE_TARBALL | tar xz
+mv Python-2.7.15 src
+cd src
+
+./configure --prefix=$OUT_PREFIX  --enable-unicode=ucs4 --with-ensurepip=no
+make
+make install
+
+# Remove unneeded test directories, similar to the official Docker Python images:
+# https://github.com/docker-library/python
+find "${OUT_PREFIX}" \( -type d -a \( -name test -o -name tests \) \) -exec rm -rf '{}' +

test/fixtures/python2/runtime.txt

-python-2.7.14
\ No newline at end of file
+python-2.7.15

test/run

@@ -77,7 +77,7 @@ testPylibmc() {
 
 testPython2() {
   compile "python2"
-  assertCaptured "python-2.7.14"
+  assertCaptured "python-2.7.15"
   assertCapturedSuccess
 }