VS2010-built drrun, etc. don't run on win2k

_From [bruen...@google.com](https://code.google.com/u/109494838902877177630/) on December 16, 2012 15:28:41_

using a VS2010-built 4.0.0 RC5, drrun.exe on win2k fails
with:

Could not create process
'c:\derek\DynamoRIO-Windows-4.0.0-5\bin32\drrun.exe', Win32
error 193: %1 is not a valid Win32 application.

this is b/c the VS2010 CRT doesn't support pre-xpsp2. DR
itself should work if you manually make config files.

xref http://msdn.microsoft.com/en-us/library/ws0swas0.aspx =>
VS2010: The C run-time libraries support Windows XP with SP2,
Windows XP with SP3, Windows Server 2003 with SP1, Windows
Server 2003 with SP2, Windows Vista, Windows Server 2008,
and Windows 7
+
Visual Studio 2012 does not support Windows XP and Windows
Server 2003 development. You must install Visual Studio 2012
Update 1 to add support for Windows XP and Windows
Server 2003.

_Original issue: http://code.google.com/p/dynamorio/issues/detail?id=1029_