.gitignore: Add *.o to ignore list
test_cicle2_lua.header.test: Generate header test file from test_cicle.cc_skel

Use the following cmd line:
gengen -i test_cicle.cc_skel -f test_cicle_gen --separate-files
       --file-name test_cicle2_lua.header.test --output-format=lua
test_cicle2_lua.lua.test: Add new Lua test case (test_cicle2.cc_skel)