that improves gzip header detection.

because x11.pc depends on it.

do not raise an exception if we cannot increase the value.

otherwise it will be invokec by supervisord.

so that we can really have max_connections=1000 as written in mariadb.cnf.

Revert "Use specific version of setuptools because the current version(0.6c12dev_r88997) is not working" because was commited in the wrong branch

This reverts commit 99bbbf51.

with this, we can manually disable/enable a backend node so that we
can safely restart it.

Revert "Update IPAex font url."

This reverts commit b0dd2c5b.