Merge all of my changes from merge-back-to-feature-vfd_swmr-attempt-1,

including the merge of `hdffv/hdf5/develop`, back to the branch that Vailin and
I share.

Now I need to put this branch on a fork with a less confusing name than
vchoi_fork!

java/test/testfiles/JUnit-TestH5.txt

@@ -1,4 +1,5 @@
 JUnit version 4.11
+.testH5get_libversion_null_param
 .testJ2C
 .testIsSerializable
 .testH5garbage_collect
@@ -11,5 +12,5 @@ JUnit version 4.11
 
 Time:  XXXX
 
-OK (9 tests)
+OK (10 tests)