Rewrote tester to do decompression tests.
Rewrote tester to do decompression tests.

nmrugg/LZMA-JS,nmrugg/LZMA-JS,nmrugg/LZMA-JS,addaleax/LZMA-JS,addaleax/LZMA-JS,addaleax/LZMA-JS,zzzhan/LZMA-JS,zzzhan/LZMA-JS,zzzhan/LZMA-JS