putty

Source code from putty official and add self customization.

Build on Windows

mingw-w64 v4.9.2
Below source files are updated to adapt to mingw env (already in current repo)
- align type definition between sshbn.h and _mingw.h
  - typedef __uint64_t BignumInt; -> typedef unsigned __int64 BignumInt;
  - typedef __uint128_t BignumDblInt; -> typedef unsigned __int128 BignumDblInt;
- update putty.rc, pageant.rc, puttygen.rc, puttytel.rc
  - Solve 64bit version issue: Not involve 32bit manifest putty.mft in 64bit build
  - REF: FauxFaux/PuTTYTray#89
a new makefile Makefile.mingw (already in current repo)
In mingw
- cd putty-src/windows
- run make -f Makefile.mingw
NOTE: for building by cygwin, please also follow above steps, except
- aligin type definition in cygwin
- remove option -mno-cygwin in Makefile.cyg. It is invalid in latest cygwin
- run make -f Makefile.cyg

Add Keyboard hotkeys (session panel -> windown -> behavior)
- F1: one key clean screen
- F2: one key copy all
- F3: duplicate session
- F4: change current window title
Add SSH auto login with user name and password
Add find text

For login local cygwin
- puttycyg
  - Project is dead, no longer maintained. The existing code only support cygwin1.5 and cygwin1.7. Now cygwin is going forward...
  - Great project. I even merged its source code to my putty. It can be replaced by cygtermd as describe in below bullet.
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/cygwin-terminal-window.html