Merge changes that correspond to the 64-bit ID changes (without the actual
switch to 64-bit IDs) to the 1.8 release branch. (Plus a few minor cleanups
and alignments with the trunk that aren't on the branch)
Tested on:
Mac OSX/64 10.9.4 (amazon) w/C++ & FORTRAN
(h5committested on branch already for a week)
Bring r23549 from trunk to desy_1_8 branch:
More misc. cleanups, but main change is to make an "extern" header file
for the plugin interface.
Tested on:
Mac OSX/64 10.8.3 (amazon)
