fix pkill usage output suppression (when no jobs -p results) on Linux
fix libsasl plugin and config paths used at runtime for cedar-14
allow requiring ext-zend-opcache (that's its name) in composer.json
parsing extension names from the .ini if it's there is necessary for that
fix new relic log output during compile
lowercase ext names from composer.json
refactor newrelic and zend-opcache install routines