ext/mysql as shared
build sqlite3 and pdo_sqlite shared, not static like it's by default
remove libmemcached dep from PHP build
factor out PHP build commons
PHP/5.5.12
export COMPOSER_VENDOR_DIR and COMPOSER_BIN_DIR for use in configs
switch apache config to rewrites for proxying, add a few default access rules, cleanup, comment, refactor
refactor nginx configs, add a few default access rules, cleanup, comment