Squashed 'External/BuildScripts/' changes from 3ae4336..ce4287c

ce4287c Add MSBuild Community tasks

git-subtree-dir: External/BuildScripts
git-subtree-split: ce4287cb55223ff7bcea1e216a960b887899e656
Merge commit '75c823954752d399978070c3597be6dbfa5c621f'
Updated MSBuild files to use MSBuild Community tasks from BuildScripts