There has been some discussion recently online (in the Tcler's chat and elsewhere) about how
Tcl's dependency information is seriously out-of-date. Normally this does not matter (most
people just build everything from scratch) but given the number of people now developing in
the core, it is becoming more important to have accurate dependency information in the core.
However, it was discovered that makedepend (and gcc -M) do not always get this information
right with Tcl's build structure. This Tcl script is intended to be a replacement for that that allows
dependency information to be built relatively easily and accurately.