add Travis CI config
fix lz4 install error
fix relative path issues & add dummy test
update installed shared libraries
set PREFIX=/usr/local to all dependent libs
parallelize the install processes to speed up the build
add Lua Busted unit test
install luarocks from tarball against LuaJIT matrix variables
fix installation order issue & matrix variable typo
ignore error messages of ldconfig
Merge branch 'travis-ci'