Description:
    More migration to using H5F_io_info_t pointers and away from using
property list IDs internally.  Also, clean up some compiler warnings in the
cache code.

Tested on:
    Mac OSX/64 10.9.2 (amazon) w/C++, FORTRAN & parallel
    (h5committest forthcoming)


git-svn-id: https://svn.hdfgroup.uiuc.edu/hdf5/trunk@25092 dab4d1a6-ed17-0410-a064-d1ae371a2980