Add htslib/hts_probe_cc.sh to sdist

[nsoranzo]

Otherwise the before-build command make -C {project}/htslib distclean from pyproject.toml fail with:

      + sh -c 'make -C /project/htslib distclean'
  Makefile:142: htscodecs.mk: No such file or directory
  make: Entering directory `/project/htslib'
  echo '# Default htscodecs.mk generated by Makefile' > htscodecs.mk
  echo 'include $(HTSPREFIX)htscodecs_bundled.mk' >> htscodecs.mk
  ./hts_probe_cc.sh 'gcc' '-g -Wall -O2 -fvisibility=hidden ' '-fvisibility=hidden' >> htscodecs.mk
  /bin/sh: ./hts_probe_cc.sh: No such file or directory
  make: *** [htscodecs.mk] Error 127
  make: Leaving directory `/project/htslib'

[nsoranzo]

This is not needed any more after commit 8ab5287, closing.

[jmarshall]

Yes, we don’t use hts_probe_cc.sh during building so we don’t really want to use it just for cleaning, so as you noticed I wanted to fix this in a different way. Thanks for reporting the problem!