Port MimeType consts from ResxResourceWriter
Port MimeType consts from ResxResourceWriter

jeffkl/msbuild,chipitsine/msbuild,AndyGerlicher/msbuild,chipitsine/msbuild,cdmihai/msbuild,mono/msbuild,AndyGerlicher/msbuild,rainersigwald/msbuild,cdmihai/msbuild,sean-gilliam/msbuild,chipitsine/msbuild,sean-gilliam/msbuild,jeffkl/msbuild,AndyGerlicher/msbuild,rainersigwald/msbuild,jeffkl/msbuild,rainersigwald/msbuild,cdmihai/msbuild,sean-gilliam/msbuild,AndyGerlicher/msbuild,jeffkl/msbuild,rainersigwald/msbuild,chipitsine/msbuild,mono/msbuild,cdmihai/msbuild,mono/msbuild,mono/msbuild,sean-gilliam/msbuild