Keep a running lifetime total of all "gauge" type metrics. Also track
the square of the sums of all "gauge" type metrics in order to determine
the standard deviation.
Change-Id: I23f60774a6421636f1a913674c7d1b54a1c5f702
Rename test suites from *-test.c to test-*.c as the former is
conflicting with the file name pattern of the build tests, which are
listed in .gitignore.
Change-Id: I8779fac492510c0996bdcb2c6250c07536fe3b63
Instead of just remembering the last seen RTP payload type, this adds a
tracker that keeps track of the last 32 seen payload types and keep the
list in order of how often each type was seen.
Change-Id: I062a43b7bfc9413b755dca548d72953ff8245477