Use the extension 'source' parameter for all providers
Use the extension 'source' parameter for all providers

Previously, only pecl provider was using the parameter pecl_source
which was a shame since pear provider also understands the source
parameter. This renames 'pecl_source' to 'source' and supplies it
to all providers.

cgalvarez/puppet-php,mmoll/puppet-php,cgalvarez/puppet-php,mmoll/puppet-php,glorpen/puppet-php,glorpen/puppet-php,mayflower/puppet-php,netors/puppet-php,netors/puppet-php,mayflower/puppet-php,NickelMedia/puppet-php,NickelMedia/puppet-php