[mintty 0.9.2] cmd.exe history doesn't work properly

[Patches Houlihan]

Browsing through the command history in cygwin's cmd.exe access to the
Windows shell doesn't work properly in mintty.  Instead of showing
previous commands, the up and down keys just move a cursor on the
screen.  Using up/down works fine with bash on mintty and cmd.exe
works fine in the standard Windows console Cygwin terminal.

mintty 0.92
CYGWIN_NT-6.1-WOW64 [...] 1.7.7(0.230/5/3) 2010-08-31 09:58 i686 Cygwin

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