Typo: TOKENV -> TOXENV

This is purely cosmetic: the logic worked correctly, since tox never saw
the TOKENV environment variable.

.travis.yml

@@ -2,7 +2,7 @@ sudo: false
 language: python
 matrix:
   include:
-    - env: TOKENV=py24 INTEGRATION=no
+    - env: TOXENV=py24 INTEGRATION=no
     - env: TOXENV=py26 INTEGRATION=yes
       python: 2.6
     - env: TOXENV=py27 INTEGRATION=yes
@@ -22,8 +22,8 @@ install:
 script:
 # urllib2's defaults are not secure enough for us
 - ./test/code-smell/replace-urlopen.sh .
-- if test x"$TOKENV" != x'py24' ; then  tox ; fi
+- if test x"$TOXENV" != x'py24' ; then tox ; fi
-- if test x"$TOKENV" = x'py24' ; then python2.4 -V && python2.4 -m compileall -fq -x 'module_utils/(a10|rax|openstack|ec2|gce).py' lib/ansible/module_utils ; fi
+- if test x"$TOXENV" = x'py24' ; then python2.4 -V && python2.4 -m compileall -fq -x 'module_utils/(a10|rax|openstack|ec2|gce).py' lib/ansible/module_utils ; fi
   #- make -C docsite all
 - if test x"$INTEGRATION" = x'yes' ; then source ./hacking/env-setup && cd test/integration/ && make test_var_precedence ; fi
 after_success: