Backport of pid table code from trunk & 2.2 to the 2.0 tree.
Create dev branch for this before we fold in


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/httpd-2.0-pid-table@547059 13f79535-47bb-0310-9956-ffa450edef68
12 files changed