r129
Makefile : added capability to install libraries Modified Directory tree, to better separate libraries from programs.
Added compilation flag -Wcast-qual
Updated lz4hc API
Improved sparse file support
scan-build tests
Updated datagen (can create sparse files)
Improved sparse files support
New lz4 API, using LZ4_compress_fast()
Added : LZ4_compress_destSize()
Sparse file support is now enabled by default
Added new LZ4IO_decompressMultipleFilenames to allow decompression of multiple files with the -m switch added in r128 (ref: google code issue 151). Limitation: will only process files matching LZ4_EXTENSION macro, which for now seems reasonable.