- fixed compatibility issue with matplotlib 0.98.6 API (frame -> spines)
- fixed compatibility issue with matplotlib 0.98.6 API (frame -> spines)

git-svn-id: 83a0274dba4329d458142e4079227af35a786d9d@94 2f3f69f2-b874-4715-96d5-35985bcb53a6

allisony/aplpy,mwcraig/aplpy