tox.ini: Add {posargs:-w tests -v} to nosetests invocation so that we can pass arguments to tox -- e.g.: to run only specific tests -- e.g.:
tox.ini: Add {posargs:-w tests -v} to nosetests invocation so that we
can pass arguments to tox -- e.g.: to run only specific tests -- e.g.:

tox -e py27 -- -v tests.test_config:TestConfig.test_config_values

thegooglecodearchive/pymssql,AlanZatarain/pymssql,djhenderson/pymssql,thegooglecodearchive/pymssql,google-code-export/pymssql,AlanZatarain/pymssql,Alwnikrotikz/pymssql,AlanZatarain/pymssql,djhenderson/pymssql,google-code-export/pymssql,thegooglecodearchive/pymssql,Alwnikrotikz/pymssql,MunDaesik/pymssql,google-code-export/pymssql,Alwnikrotikz/pymssql,MunDaesik/pymssql,djhenderson/pymssql,MunDaesik/pymssql