Log Message:
Fix crash on i386 in www/ap-php build with PHP 7.x

PHP 7.x on i386 crashes unless built with GCC >= 4.9. There
was the necessary tweak for the lang/php70 and lang/php71
packages, but not for dependencies such www/ap-php. As a
result, www/ap-php crashed during the build. We fix this by
moving the GCC_REQD to Makefile.php which is included
by dependent packages