fix vs2012 quirk

avoiding a harmless inheritance by dominance warning message
rename vs2012 template files

renames template files to reflect visual studio 2012
rename vs 2010 - > 2012 (purely aesthetic)
fix projectGenerator project file

* The project generator project file was originally *not* properly
linked against MultiThreadedDebugDLL, which lead to extreamly misleading
crashes when closing derived fstream and istream classes, because
debugging is more interesting that way...

it has something to do with how the compiled libraries are laid out, I
came to believe.

<RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>

was the big game changer.

* also adds missing GUI elements for ofxGUI in project Generator Project
file.
include missing ofxGui files in project generator project file
fix names for vs2012 project generator template
Merge pull request "Fix vs2012 proj generator etc"
Revert "rename vs2012 template files"

This reverts commit c93b225b81bffcad57a3eb374784d5d2aab9fe99.
ReFix names for VS2012 pG
Fix includes in pG for VS2012

`<Filter>addons\ofxGui\src</Filter>`
Update .vcxproj files to improve VS2012 implementation