Small fix in OS_info for windows; CMakeLists.txt - add config option to exclude PCI easily

[pavel-a]

• Mute c++ warning; small optimization in OS_info for windows;
• CMakeLists.txt - add config option to exclude PCI easily
  • Version increased to 0.6.1

In os_info_windows.cpp, version_name() :

• VARIANT val should be initialized, VC++ compiler warning on val_destructor because of uninitialized inout param.
• In WMI query get Capture, not Name. No need to find & resize string.

[nabijaczleweli]

First patch applied (with minor editorial) as c8da4c2. For the second one, replace the CMake filter with a #if[n]def INFOWARE_... in pci.cpp; compare, say, src/gpu/d3d.cpp:

#ifndef INFOWARE_USE_VULKAN
#ifdef INFOWARE_USE_D3D

and in the example, add the same ifdef/ifndef after the version listing, say "compiled without PCI support" or whatever. Also don't change the version.

[pavel-a]

done partially, sent new