[Bashdb-remake] ANN: release 4.1+dbg1.0 adds profiling and callgraph visualization

[Rocky B. <ro...@gn...>]

This latest release adds an option --profile which will profile the make
run and produce data files in callgrind format.

kcachgrind is a nice tool for reading the callgrind output format. However
there is also dot2graph as well as valgrind_annotate.

A description of the profile data format can be found in
http://valgrind.org/docs/manual/cl-manual.html