Parts 3 and 4 to the vxworks/fixincludes patches

[rbmj]

I get a clean build on my end... no stdarg.h issues.  Build 
characteristics are given in the previous email.

On 10/29/2012 4:26 PM, rbmj wrote:
> The build does eventually die in libstdc++-v3, but that's not due to
> these changes (it gives me an internal compiler error while compiling
> complex_io.cc inside of <complex>, see bug 55126)
>

This is fixed by the patch in the comments of bug 54957. With this 
applied (along with a very minor gthread fix at 54805) I get a good build.

Robert