Tartarus CVS: putty simon

[tartarus-commits@lists.tartarus.org]

CVSROOT:	/home/cvs
Module name:	putty
Changes by:	simon	02/10/15 17:50:42

Modified files:
	unix           : pterm.c 

Log message:
Support scrolling with the mouse wheel (X servers apparently usually
send a button 4 press for an upward wheel movement and a button 5
press for a downward one). Untested since my own trackball's button
4 does nothing obvious. Someone with a mouse wheel should give this
a workout.