examples/null/null_main.c:  Need to include config.h it order know if this is or is not a kernel build

Several commands must be disabled in the kernel build because they depend on interfaces that are not available outside of the kernel: dd, df, losetup, mkfatfs, mkdr, and ps.

Changes to many Makefiles.  For kernel buil object containing main cannot go into library because of name collisions.  The object file must be handled as a special case in every Makefile

Changes to many Makefiles.  For kernel buil object containing main cannot go into library because of name collisions.  The object file must be handled as a special case in every Makefile

Changes to many Makefiles.  For kernel buil object containing main cannot go into library because of name collisions.  The object file must be handled as a special case in every Makefile

Changes to many Makefiles.  For kernel buil object containing main cannot go into library because of name collisions.  The object file must be handled as a special case in every Makefile

Customize the program name in the generic setup that was added to each makefile that installs a program