cleanup pininput a bit and reuse shutdown functionality of VP when pressing escape key long enough for keyboard, too

..reuses "Exitconfirm" registry setting (new default is 2 secs)

git-svn-id: svn://svn.code.sf.net/p/vpinball/code/trunk@931 14438d79-0ffd-4333-8ae7-ea2bdd901387
add comment on 2 sec exit

git-svn-id: svn://svn.code.sf.net/p/vpinball/code/trunk@932 14438d79-0ffd-4333-8ae7-ea2bdd901387
Fixed an uninitialized memory access.
Merge branch 'master' into fixes
Merge branch 'fixes' into dev

Conflicts:
	pininput.cpp
Merge branch 'dev' of https://github.com/c-f-h/vpinball into dev