py-sphinx-contrib: broken py26 subport

[petrrr]

I discovered this when looking through some of my own build failures.

For example on the Yosemite buildbot:

[...]
[OK] py-sphinx-contrib
[FAIL] py26-sphinx-contrib
[OK] py27-sphinx-contrib
[...]

  File "/opt/local/var/macports/build/_opt_local_var_macports_sources_svn.macports.org_trunk_dports_python_py-sphinx-contrib/py26-sphinx-contrib/work/7f39b7f255e3/argdoc/sphinxcontrib/argdoc/ext.py", line 122
    all_patterns[char] = { K : re.compile(V) for K,V in patterns.items() }
                                               ^
SyntaxError: invalid syntax

Although I have not checked this in detail, this looks like a Py 2.6 language incompatibility, maybe caused by the update in r143552 or any of the earlier ones.

I guess, we can just get rid of the py26 subport, just requires to check for dependents.

[seanfarley (Sean Farley)]

Fixed in r144289.