Update mftsession.py

A reworking of AnalyzeMFT designed to hopefully work better for large MFTs.
Update analyzeMFT.py
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Added support for l2ts and bodyfiles
Getsize no longer needed, so deleted

Getsize was a tool I used to do some basic debugging and is no longer needed. sizecheck now does everything required.
Fixed typos
Fixed bug in outputting log2timeline file
Merge pull request #8 from Pballen/master

Changes to support small memory systems. Added progress indicator.