Patch release with several bug/build fixes:
- Fix an integer-overflow bug reading malformed files compressed with B44A/B44B
- Fix a buffer-overrun bug reading malformed files compressed with PXR24
- Fix a bug compressing half data with ZIPS/ZIP data when the compressed size equals packed size
- Single part files no longer get assigned a part name when writing via the python module
- Fix a build failure on FreeBSD involving
threads.h
This also eliminates several compiler warnings, particularly about the deprecated isOptimizationEnabled() API and deprecates standard attributes.