SerialManager: Fix for COM10 and beyond on Windows.

Thanks to Sebastian Toll for reporting:
http://micro-manager.3463995.n2.nabble.com/Bug-Opening-Serial-ports-larger-than-COM9-Using-invalid-PortPath-in-Open-Method-td7583138.html

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@13674 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd
Tofra: Patch from Ilya (filter wheel positioning fix).

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@13675 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd