Add ArmDesktopSdk.props and a Directory.Build.props to force-import ARM desktop SDK settings (WindowsSDKDesktopARMSupport and centralized handling of the ARM desktop preprocessor define). Remove x64-specific configurations, property sheets and duplicated ARM preprocessor definitions from multiple .vcxproj files to simplify supported platforms. Update pkgread to use package-based pugixml library paths and set TreatWChar_tAsBuiltInType, and tweak solution configuration entries in AppInstallerReset.sln.
Change PlatformTarget from x86 to AnyCPU across solution and projects (Launch, Manager, ModernNotice, Reader) so builds target AnyCPU. Add ClickOnce/publishing properties to Manager.csproj (PublishUrl, Install, Update settings, ApplicationVersion/Revision, BootstrapperEnabled, etc.) and include a BootstrapperPackage entry for .NET Framework 3.5 SP1. These changes prepare the projects for AnyCPU builds and configure Manager for deployment/publishing.
Add a new pugixml static library project and include it in the solution to support ARM builds. pkgread now references the new pugixml project (removed direct pugixml file/includes) and its Release|ARM PrecompiledHeader is set to NotUsing. Update solution configurations to include pugixml and add appropriate build platform mappings. Update notes/symlinks.md with instructions for the new project and manual copying of generated pugixml.lib; also clear an AdditionalLibraryDirectories entry in priformatcli.
Upgrade solution to Visual Studio 17 and add ARM build configurations across projects. Several .vcxproj files were updated to include Debug/Release|ARM property groups, property sheet imports and LinkIncremental settings; platform toolset set for ARM configs where appropriate. A new pugixml_arm project and its sources/filters were added. Also added ExtensibilityGlobals (SolutionGuid) to the .sln.
