Convert the output from many profilers into a Graphviz dot graph

Current versions

gprof2dot requires the following formulae to be installed:
graphviz 2.40.1 Graph visualization software from AT&T and Bell Labs
python@2 2.7.14_3 Interpreted, interactive, object-oriented programming language

Recent formula history

ilovezfs gprof2dot: depend on python@2
ilovezfs gprof2dot: rename python@2 dependency
ilovezfs gprof2dot: depend on python instead of :python
ilovezfs Audit fixes for descriptions (#20013)
ilovezfs gprof2dot: fix heredoc in test (#19683)

Formula code at GitHub