Hi Thomas,
you are mixing up two different things. The path src/hardware is where the sources reside. That has nothing to do with 
where the final executable resides.

If you want to have your resource manager (or any other binary) inside the IFS, you need to edit the build file of the 
image and simply add the name of your executable (and possibly libraries that it depends upon which are not yet in the 
image) to the list of binaries. You may have to adjust the search path by specifying [search=] attribute. After 
rebuilding the image you can verify that your program is actually added to it by using either dumpifs tool or launch 
mkifs with -vvvvv so that it prints all binaries that it adds to stdout.
Then you transfer the new IFS as usual to the target and reboot.

Hope this helps,
-Albrecht

The documentation that discusses how to add files to an IFS is here:

http://www.qnx.com/developers/docs/7.0.0/#com.qnx.doc.neutrino.building/topic/buildfiles/buildfile.html