taobao/tengine — pull request #183 by lifeibo (2013-02-06 08:37:23+00:00)
Title: New feature: sysguard suppport memfree.

1. Read memory info from /proc/meminfo other than sysinfo call.
2. ngx_parse_size support G/g.
3. sysguard supports mem_free: sysguard_mem free=size action=/busy;