Add LZMA compression support

Some tests (opl_stripped.elf from Open PS2 Loader 0.9.3+.1386-Beta-f112b26):

Original file size: 2305808 bytes

packer	compressed size	ratio	time
`lzo`	`1508572`	`34.58%`	`0m0,138s`
`lz4`	`1279220`	`44.52%`	`0m0,673s`
`zlib`	`1109555`	`51.88%`	`0m0,495s`
`n2b`	`1107884`	`51.95%`	`0m17,153s`
`n2d`	`1091868`	`52.65%`	`0m16,415s`
`n2e`	`1084760`	`52.96%`	`0m18,643s`
`lzma`	`827460`	`64.11%`	`0m1,419s`

Note: The LZMA packer used in this test is the single-threaded one, the multi-threaded packer is even faster.

threads	time
single	`0m1,419s`
multi	`0m0,927s`

The LZMA packer can be built without multi-thread support by passing LZMA_MT=0 to make, i.e. make LZMA_MT=0

I have uploaded pre-built binaries for the following platforms:

For testing purposes, I have included for each platform two builds: one with single-threaded LZMA packer and another with multi-threaded LZMA packer.

Update: ps2-packer build with LZMA set as the default packer.

ps2dev / ps2-packer