These changes allow for projects that were created and built using the
same Makefile to be placed under the submodules directory. This Makefile
will recursively build the submodules and link to the top project.
The submodules will be built as a static library using ar rcs.
This Makefile will be used as a way to start new projects with the same
hierarchy. It will also be tightly coupled with the x testing framework
for c (x_tfw4c).
It has targets to setup the source, include, object, and tests
directories using the `make dirs` command.
There is some fun interesting things that I used to get the target to
recompile when the header files are updated using the -MMD and -MP flags
in gcc.
These flags basically allow for the generation of dependencies from each
source file that are exported and then included using the -include
$(DEPENDENCIES) line at the bottem of the Makefile.
