Runtimes: adjust the specified version number (#79196)

Use a full 3-component version specifier as that is required for some
support on Windows. The version number components will be used to
generate the Win32 SxS manifest for embedding within the DLL.

Author: compnerd

Runtimes/Core/CMakeLists.txt

@@ -39,7 +39,10 @@ set(SwiftCore_CMAKE_MODULES_DIR "${CMAKE_SOURCE_DIR}/cmake/modules")
 list(APPEND CMAKE_MODULE_PATH ${SwiftCore_CMAKE_MODULES_DIR})
 
 include(CMakeWorkarounds)
-project(SwiftCore LANGUAGES C CXX Swift VERSION 6.1)
+# NOTE: always use the 3-component style as the expansion as
+# `${PROJECT_VERSION}` will not extend this to the complete form and this can
+# change the behaviour for comparison with non-SemVer compliant parsing.
+project(SwiftCore LANGUAGES C CXX Swift VERSION 6.1.0)
 
 # The Swift standard library is not intended for use as a sub-library as part of
 # another project. It is tightly coupled with the compiler version.