Py-tlsh

- Add `make.sh` and `clean.sh` scripts for building/cleaning the project.
- Modifications to `tlsh_unittest.cpp` to write errors to stderr (not stdout) and to continue processing in some error cases. Also handle a listfile (`-l` parameter) which contains both TLSH and filename.
- Updated expected output files based on changes to `tlsh_unittest.cpp`.

- The checksum can be changed from 1 byte to 3 bytes. The collison rate is lower using 3 bytes.
- If the incoming data has few features. The algorithm will not generate hash value. At least half the buckets must be non-zero.
- Null or invalid hash strings comparison will return `-EINVAL` (-22).
- Python extension library will read `CMakeLists.txt` to pick the compile options.
- The default build will use half the buckets and 1 byte checksum.
- New executable `tlsh_version` reports number of buckets, checksum length.

- Length difference consideration can be disabled in this version. See `totalDiff` in `tlsh.h`.
- TLSH can be compiled to generate the 70 or 134 character hashes. The longer version is more accurate.

- Added Python extension library. TLSH is callable in Python.
- Stop generating hash if the input is less than 512 bytes.
- Cleaned up.

- Supports Windows and Visual Studio.

- Enabled C++ optimization. Runs 4x faster.