- update to 1.2.13:
* Fix configure issue that discarded provided CC definition
* Correct incorrect inputs provided to the CRC functions
* Repair prototypes and exporting of new CRC functions
* Fix inflateBack to detect invalid input with distances too far
* Have infback() deliver all of the available output up to any error
* Fix a bug when getting a gzip header extra field with inflate()
* Fix bug in block type selection when Z_FIXED used
* Tighten deflateBound bounds
* Remove deleted assembler code references
* Various portability and appearance improvements