Log message:
csound6: Needs flex. Remove bsdtar requirement.

Log message:
*: recursive bump for libffi

Log message:
*: Recursive revision bump for openssl 1.1.1.

Log message:
*: Recursive revbump from devel/boost-libs

Log message:
csound6: Not actually PYTHON_FOR_BUILD_ONLY

Log message:
csound6: Support more audio backends.

Default to PortAudio since it's supported natively on most pkgsrc platforms.

Fix building with PKG_DEVELOPER and hdf5 installed.

Bump PKGREVISION

Log message:
add options.mk to csound6 and use it to (optionally, non default)
disable including pulseaudio support.

Log message:
audio/csound6: fix pkglint warnings

Log message:
update csound6 to 6.13.  changes since 6.03.02 include:

- new opcodes and generators:
  pinker, exciter, vactrol, hdf5 family, many new array-operations,
  lenarray, getseed, tabifd, websocket, framebuffer, olabuffer,
  compress2, directory, ftsamplebank, mvclpf1, mvclpf2, mvclpf3,
  mvclpf4, mvchpf, cepsinv, moogladder2, paulstretch, mp3scal,
  filescal, dct, getftargs, mfb, quadbezier, select, midiarp,
  hilbert2, ableton link, pvstrace, ceil, floor, round, int, frac,
  powoftwo, abs, log2, log10, log, exp, sqrt, cos, sin, tan, acos,
  asin, atan, sinh, cosh, tanh, cbrt, limit1, atan2, pow,hypot,
  fmod, fmax, fmin, limit, tvconv, liveconv, bpf, xyscale, ntom,
  mton, OSCsend, OSCraw, sorta, sortd, dot, zdf_1pole_mode,
  zdf_2pole_mode, zdf_ladder, zdf_1pole and zdf_2pole.xml,
  diode_ladder, z35_hpf, K35_lpf, product, sc_phasor, sc_lag,
  sc_lagud, sc_trig, midiout_i, chngetks, chnsetks, squinewave,
  gen53, loscilphs, loscil3phs, balance2, fluidinfo, ftaudio,
  OSCcount, faustplay, faustdsp, OSCbundle, beosc, beadsyn,
  printarray, reshapearray, trim, trim_i, string2array, nstrstr,
  ntof, ampmidicurve
- deprecated opcodes:
  stackops, sndload
- fixes and feature extensions to many opcodes
- new while loop construct
- ?: now does strings as well as numbers
- better mp3 support
- many, many bugs fixed
- many internal artificial limits removed
- better debugging and instrumentation
- src_conv utility improved
- floating point tempo
- higher precision p2 and p3
- html5 frontend removed
- better server support

Log message:
fix build and prepare for the future:

- switch to fltk 1.3 from 1.1
- turn off fluidsynth for now (API hiding changes needed, likely
  fixed upstream already -- we are out of date.)