Add pear modules, mail and net_smtp via composer (#93)

Add pear modules, mail and net_smtp via composer, remove php 5.6 build due to phpunit 6

lib/composer/vendor/consolidation/config/tests/scripts/prep-dependencies

@@ -0,0 +1,66 @@
+#!/bin/bash
+
+#
+# This script is called automatically on every `composer update`.
+# See "post-update-cmd" in the "scripts" section of composer.json.
+#
+# This script will create a derived composer.json / composer.lock
+# pair for every test scenario.  Test scenarios are defined in the
+# "scenarios" file, which should be customized to suit the needs
+# of the project.
+#
+
+SELF_DIRNAME="`dirname -- "$0"`"
+source ${SELF_DIRNAME}/scenarios
+
+echo
+echo "::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::"
+echo "::"
+echo ":: Update dependencies for the following scenarios:"
+echo "::"
+echo "::    ${SCENARIOS}"
+echo "::"
+echo "::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::"
+echo
+
+set -ex
+
+for SCENARIO in ${SCENARIOS} ; do
+
+  dir=dependencies/${SCENARIO}
+
+  # Define indirect variable names
+  stability_variable="stability_${SCENARIO}"
+  requirement_variable="requirement_${SCENARIO}"
+  platform_php_variable="platform_php_${SCENARIO}"
+
+  echo "### Create $dir/composer.json for ${SCENARIO} scenario"
+  mkdir -p $dir
+  cp composer.json $dir
+
+  # Then set our own platform php version if applicable (otherwise unset it)
+  composer -n --working-dir=$dir config platform.php "${!platform_php_variable---unset}"
+
+  # Temporarily set our vendor directory to 'vendor'
+  composer -n --working-dir=$dir config vendor-dir vendor
+
+  # Set an appropriate minimum stability for this version of Symfony
+  composer -n --working-dir=$dir config minimum-stability "${!stability_variable-stable}"
+
+  # Add a constraint to limit the Symfony version
+  composer -n --working-dir=$dir require --dev --no-update "${!requirement_variable}"
+
+  # Create the composer.lock file. Ignore the vendor directory created.
+  composer -n --working-dir=$dir update --no-scripts
+
+  # Set the vendor directory to its final desired location.
+  composer -n --working-dir=$dir config vendor-dir '../../vendor'
+
+  # The 'autoload' section specifies directory paths that are relative
+  # to the composer.json file. We will drop in some symlinks so that
+  # these paths will resolve as if the composer.json were in the root.
+  for target in $AUTOLOAD_DIRECTORIES ; do
+    ln -s -f ../../$target $dir
+  done
+
+done