mSVC: fixed test problem in test/MSVC/embed-manifest.py by ensuring a manifest gets generated -- added /MANIFEST to LINKFLAGS and SHLINKFLAGS.
mSVC: fixed test problem in test/MSVC/embed-manifest.py by ensuring a manifest gets generated -- added /MANIFEST to LINKFLAGS and SHLINKFLAGS.

andrewyoung1991/scons,andrewyoung1991/scons,andrewyoung1991/scons,andrewyoung1991/scons,andrewyoung1991/scons,andrewyoung1991/scons,andrewyoung1991/scons,andrewyoung1991/scons,andrewyoung1991/scons