Add a new function ap_set_default_fperms. This allows people to set the

umask to be used when creating files.  This should change the permissions
of files created using APR_DEFAULT_OS.  Also removed a warning introduced
with the sys/stat.h changes.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@85537 13f79535-47bb-0310-9956-ffa450edef68