Description:
    Clean up more compiler warnings, plus merge a few Coverity bug fixes from
the hdf5_1_8_coverity branch back to the trunk:

r20877:
Purpose: Fix coverity issue 1723

Description:
Modified test_generate in hl/test_image to close file "f" before exit, even if
an error occurs.

r20879:
Issue 63: change check of return of H5Tget_nmembers to <=0. No need to go
futher if call fails as well as empty.

r20881:
Coverity #659 in Run 46: I changed the Line 442 where it tries to check whether
FLAG_PRINTED is TRUE.  But it had just been set to FALSE.  I took out the
condition check in the print statement.

Tested on:
    Mac OSX/64 10.9.2 (amazon) w/C++, FORTRAN & Parallel
    (too minor to require h5committest)


git-svn-id: https://svn.hdfgroup.uiuc.edu/hdf5/trunk@24869 dab4d1a6-ed17-0410-a064-d1ae371a2980