Fix jv(3,4) case by special casing.  The problem is in the recur function which seems to have a special-case problem with n=3 and x=4 because pk=qk in that case.
Fix jv(3,4) case by special casing.  The problem is in the recur function which seems to have a special-case problem with n=3 and x=4 because pk=qk in that case.

git-svn-id: 003f22d385e25de9cff933a5ea4efd77cb5e7b28@4765 d6536bca-fef9-0310-8506-e4c0a848fbcf

lesserwhirls/scipy-cwt,jasonmccampbell/scipy-refactor,lesserwhirls/scipy-cwt,jasonmccampbell/scipy-refactor,lesserwhirls/scipy-cwt,scipy/scipy-svn,lesserwhirls/scipy-cwt,scipy/scipy-svn,jasonmccampbell/scipy-refactor,jasonmccampbell/scipy-refactor,scipy/scipy-svn,scipy/scipy-svn