[feature] changed db format.
[tune][feature] Moved indexing db process to C code. By this, copying db file to modify is no longer needed
[feature] Suppress message.
[misc] changed Makefile to make "bin" directory
[test] update tests.
[misc] added db utils.
[tune] increased processing speed.
[env] changed to be enable to build on linux.
[cxxtags][tune] Increased processing speed.
[test] Followed new db format.
[cxxtags_html_dumper][feature] Synced with new db format.
[cxxtags][cxxtags_gather] Synced with new db format.
[util][bug-fix] Fixed process for table join.
[test] Synced with new db format.
[cxxtags][bug-fix] Fixed file path normalizing process.
[util] Added process to normalize file path.
[refactore] Changed way to connect to database file.
[test] Synced with new db format.
[test] Synced with db format.
[cxxtags][bug-fix] Fixed the way to deal with empty file names.