Clean up warnings and bring changes from Coverity branch back to trunk:
r20451:
Fixed coverity 810
r20454:
Purpose: Fix coverity issue 816
Description: Modified various file drivers to always check the return value from
H5P_get_driver_info.
r20455:
Purpose: Cleanup fix for coverity issue 816
Description: Removed redundant check for "fa" in H5FD_core_open.
Tested on:
Mac OSX/64 10.8.2 (amazon) w/debug
(Too minor to require h5committest)