* use sqlite3_bind_int64 instead of sqlite3_bind_int for limit->offset
+ added db_file_dirlist()
+ improved readability in db_file_search_tag()
* changed db_file_search_tag()
+ added option '-L' for tool
+ added header to common.h
+ added '-L' option for embedded version of tool
* updated doc/options.txt
* improvements of '-L' option