prepare for integration of the HTTP API library
add the http api implementation: work in progress...
http API: update catalog if it's older than 24h
http API: define client ID
http API: finish catalog loading routines, add DEBUG mode
fix luadoc makefile
http API: add search() and _FORCE_CATALOG_REPARSE flag
http API: search(): more precise search with
http API: clean up stale argument
http API: search(): return unique results
http API: search(): full search with threshold
http API: clean up var names
HTTP api: change client id to officially registered one
http: compress the generated catalog and index files
http api: use file.write()
http api: add exit()
http api: search(): index  early
http api: search(): index  early
http api: search(): fix concat error with
http: partial implementation of info() and request data caching