- liblzma source code added (we don't want to use a DLL)
- Moved lzma.h and lzma subfolder to api subfolder
- Removed some unnecessary files (liblzma.def, lzma_dll.txt)
- Adjusted make.bat, added some "echo" statements to show build state.
- Can be compiled, but using "-cl" or "-cx" give errors (specified
filter chain is not supported), "-cm" gives a crash
