[WAGON-525] Support for detecting and using of KiTTY's klink.exe and kscp.exe

When using KiTTY's klink.exe/kscp.exe instead of PuTTY's plink.exe/pscp.exe,
the ScpExternalWagon implementation passes the command line arguments
"-o BatchMode yes" to these executables which fail with "unknown option -o".

This commit changes the ScpExternalWagon class to treat KiTTY executables
like PuTTY executables.

This closes #28
1 file changed