Jira AER-2314: Fixes to improve Lua State Management.
Fix for bytes.get_int16() API call, not working as expected.
Update Lua GC to use a 3-tiered approach so that it handles GC for small UDFs quickly and Large UDFs correctly.
Jira:  AER-2314
Update comment to show correct status of Lua GC Stats.
Fixes for LUA - byte API function calls not behaving
as expected.
Merge branch 'master' of github.com:citrusleaf/aerospike-mod-lua
Indentation correction
Indentation alignment
mod-lua license update
Fix "make clean" to Correctly Clean Modules.
Added a debug message to print the size of lua state created
for a given lua file.
Merge branch 'master' into modlua_gaya3