1. No external sort tool; merged sort function with code;
2. Speedup the text search with multi threads;
3. Ignored struct declaration when search symbol.

1. Install MinGw and MSYS, make sure bison (or flex and yacc) installed;
2. Install mingw-libpdcurses;
3. Copy 3rd include dir and lib dir into MinGW include and lib paths;
4. in MSYS shell, run ./configure.msys and ./make.msys