[packages,MakeFileBuilder,dev] Moved top-level MakeFile to the build root folder. Having it inside the primary package folder does not aid readability, nor is there a case of having multiple MakeFiles at the top level, and you can use make file target names to build subtargets
[Opus.Core] Adding mechanism for getting a 32-bit or 64-bit version, from an existing BaseTarget
[packages,CommandLineProcessor,dev] Enabling command line processor debugging of their environments
[packages,VisualCCommon,dev] 64-bit compilers require their 32-bit bin path counterparts on the PATH, due to dependencies on DLLs on that path, e.g. mspdbXXX.dll
[packages,VisualCCommon,dev] 64-bit linker also requires a DLL from the 32-bit bin path