Renaming jamoma≈ => j≈ in this help patch
Renaming help files for jamoma, jamoma~ and jamoma≈ to j, j~ and j≈ respectively
Ensuring that this test actually test for all MSP-related externals in the distro, adding some that were missing. Adding note that j.meter~ is deprecated, but it is still included in the test.
Updating help patch for j~ so that it use the current name of the external (j~).