r131
Make git ignore generated files
Makefile : added capability to install libraries Modified Directory tree, to better separate libraries from programs.
changed datagen to remove one malloc
Updated lz4hc API
Improved sparse file support
Updated datagen (can create sparse files)
Improved sparse files support
Added compilation flag -Wcast-qual
New lz4 API, using LZ4_compress_fast()
Fixed a few minor visual analyzer warnings
Minor doc clarification on sparse mode support
lz4cli : add one malloc test
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.