Merge r1003338 from trunk:

Overhaul the apr_file_io.h doxygen documentation so to no longer reference
deprecated #defines. Fix various cut and paste errors.
Submitted by: Stefan Ruppert <ml ruppert-it de>


git-svn-id: https://svn.apache.org/repos/asf/apr/apr/branches/1.5.x@1534092 13f79535-47bb-0310-9956-ffa450edef68