Log Message:
Update to 1.4.5.2.

This version fixes some serious bugs in version 1.4.5 and includes the
following relevant changes:

* Fixed error in B-tree deletion routine which could cause groups to be
  corrupted when objects are removed from them.
* Fixed error in file space freeing code which could cause metadata to
  fail to be written to the file.
* Fixed error in library when configured with --enable-debug=all.
* Added a -force option to h5redeploy.
* When using gcc 3.x, we use -std=gnu99 instead of -ansi for compiling.