Revert "Use pecl to install runkit"

This reverts commit 1810ae632c.

This shouldn't yet go to master...

.travis.yml

@@ -29,7 +29,7 @@ before_script:
   - mysql -uroot -e "SET PASSWORD = PASSWORD('$TESTSUITE_PASSWORD')"
   - composer install --dev --no-interaction
   - pip install --user codecov
-  - if [ $TRAVIS_PHP_VERSION != "hhvm" ] ; then pecl install runkit ; fi
+  - if [ $TRAVIS_PHP_VERSION != "hhvm" ] ; then ./test/install-runkit ; fi
   - if [ -n "$SELENIUM" ] ; then ./test/install-browserstack ; fi
   - if [ -n "$SELENIUM" ] ; then php --server 127.0.0.1:8000 > php.log & fi
   - if [ -n "$SELENIUM" ] ; then ~/browserstack/BrowserStackLocal -localIdentifier "travis-$TRAVIS_JOB_NUMBER" -onlyAutomate "$TESTSUITE_BROWSERSTACK_KEY" 127.0.0.1,8000,0 & fi

test/install-runkit

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+if [ $TRAVIS_PHP_VERSION = "nightly" -o $TRAVIS_PHP_VERSION = "7.0" ] ; then
+    exit 0
+fi
+
+
+set -e
+
+git clone --depth=100 git://github.com/zenovich/runkit.git
+
+pushd runkit
+git checkout c337393762d54cf6df305cf8e92dac3a162157f4
+
+phpize
+./configure
+make
+make install
+popd
+
+phpenv config-add test/travis.php.ini