winpr/tools/makecert: add pfx support
winpr: fix build on Windows with unit tests
winpr: improve windows builds across visual studio versions and toolsets
winpr/makecert: improve command line options
Merge branch 'master' of github.com:FreeRDP/FreeRDP
winpr-pool: fix header on non-Windows
Merge pull request #1971 from awakecoding/master

Win32 Visual Studio Version + Toolset Fixes, makecert improvements