Make Raw Context Extendable#2

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lpeabody wants to merge 2 commits intocevou:masterfrom

lpeabody:feature/extendable-raw-class

Commits on Apr 13, 2016

Make data members protected so that extending classes have access to configuration and parameters.
Les Peabody
committed
pecl/imagick requires PHP >= 5.4.0. Dropping support for 5.3.
Les Peabody
committed