MSVC Projects: Use DOS/Windows Line Feeds for .sln Files

Visual Studio expects .sln files to have DOS/Windows line feeds so that
the their versions and meta data can be properly recognized.

	* MSVC_Net2005/gtkmm.sln:
	* MSVC_Net2008/gtkmm.sln:
	* MSVC_Net2010/gtkmm.sln: Use DOS/Windows line feeds as this is
	  what the Visual Studio IDE expects of those files.
Fix the Visual Studio 2008/2010 Projects

Remove the /vd2 compile-time option, as it causes crashes in the built
binaries, and define a MSVC-compatible getc_unlocked() replacement.

	* MSVC_Net2008/gdkmm/gdkmm.vcproj:
	* MSVC_Net2008/gtkmm/gtkmm.vcproj:
	* MSVC_Net2010/gdkmm/gdkmm.vcxproj:
	* MSVC_Net2010/gtkmm/gtkmm.vcxproj: Remove the /vd2 compile option, as it
	  is not needed and causes crashes in the built code.
	* MSVC_Net2008/demos/gtk-demo/gtk-demo.vcproj:
	* MSVC_Net2010/demos/gtk-demo/gtk-demo.vcxproj: Remove the /vd2
	  compile option, and define a getc_unlocked() replacement suitable
	  for Visual Studio builds.
Merge branch 'gtkmm-2-24' of git://git.gnome.org/gtkmm into v2.24.00