Shooting bugs in version for win32

1) fixed crashes when input file is missed (decryption & encryption).
2) removed creation empty file if operation is unsuccesful.
3) separated info about rifkey & rap when this file is missed.
4) you can use rifkey.bin from any location (another one batch mode
fix).
5) fixed crashes when input or source file is missed (bruteforce mode)
6) clean up.
Merge pull request #3 from Sorvigolova/master

Shooting bugs in version for win32