new file:   .junk/functionNameForFunctionDescriptor.m
modified:   PlotWaveforms.m
modified:   makefigures.m

prep for submission.  don't require the export_fig files.
new file:   README.txt
new file:   changeTrace.m
new file:   disableTrace.m
new file:   enableDebug.m
new file:   enableTrace.m
new file:   isDebugEnabled.m
new file:   make.frag
new file:   traceit.m
update makefiles to use ../pd/make.*

modified:   ../../METADATA
renamed:    ../trace/README.txt -> ../pd/README.txt
renamed:    ../ps1/changeTrace.m -> ../pd/changeTrace.m
renamed:    ../ps1/disableTrace.m -> ../pd/disableTrace.m
renamed:    ../ps1/enableDebug.m -> ../pd/enableDebug.m
renamed:    ../ps1/enableTrace.m -> ../pd/enableTrace.m
renamed:    ../ps1/isDebugEnabled.m -> ../pd/isDebugEnabled.m
new file:   ../pd/make.rules
renamed:    ../trace/make.frag -> ../pd/make.vars
renamed:    ../ps1/traceit.m -> ../pd/traceit.m
modified:   GNUmakefile
modified:   ../ps1/GNUmakefile
modified:   ../ps2a/GNUmakefile
modified:   ../ps2b/GNUmakefile
modified:   ../ps3a/GNUmakefile
modified:   ../ps3b/GNUmakefile
deleted:    ../trace/changeTrace.m
deleted:    ../trace/disableTrace.m
deleted:    ../trace/enableDebug.m
deleted:    ../trace/enableTrace.m
deleted:    ../trace/isDebugEnabled.m
deleted:    ../trace/traceit.m