Updated unpfs extractor to create unique output directories in the event of multiple PFS images inside the same file; added directory traversal check.

Changed the reported name of raw signatures to 'Raw signature' so that --dd option can be used to extract arbitrary raw signatures

setup.py now creates version.py which defines the current binwalk version (with git commit hash, if avaliable)

Add LUKS detection

This adds detection of XAR archive files.

This change limits the size of extracted DER sequences to the size given in the sequence's length field.

Fixed lzmamod.py bug; updated extractor module to include information about which extraction utility was used.