contrib: drop Python 2.6 from manylinux1 wheel script

contrib/build-linux-wheels.sh

@@ -1,34 +1,34 b''
 #!/bin/bash
 # This file is directly inspired by
 # https://github.com/pypa/python-manylinux-demo/blob/master/travis/build-wheels.sh
 set -e -x
 
-PYTHON_TARGETS=$(ls -d /opt/python/cp2*/bin)
+PYTHON_TARGETS=$(ls -d /opt/python/cp27*/bin)
 
 # Create an user for the tests
 useradd hgbuilder
 
 # Bypass uid/gid problems
 cp -R /src /io && chown -R hgbuilder:hgbuilder /io
 
 # Compile wheels for Python 2.X
 for PYBIN in $PYTHON_TARGETS; do
     "${PYBIN}/pip" wheel /io/ -w wheelhouse/
 done
 
 # Bundle external shared libraries into the wheels with
 # auditwheel (https://github.com/pypa/auditwheel) repair.
 # It also fix the ABI tag on the wheel making it pip installable.
 for whl in wheelhouse/*.whl; do
     auditwheel repair "$whl" -w /src/wheelhouse/
 done
 
 # Install packages and run the tests for all Python versions
 cd /io/tests/
 
 for PYBIN in $PYTHON_TARGETS; do
     # Install mercurial wheel as root
     "${PYBIN}/pip" install mercurial --no-index -f /src/wheelhouse
     # But run tests as hgbuilder user (non-root)
     su hgbuilder -c "\"${PYBIN}/python\" /io/tests/run-tests.py --with-hg=\"${PYBIN}/hg\" --blacklist=/io/contrib/linux-wheel-centos5-blacklist"
 done