[Bug-gsl] numerical integration example in documentation should free workspace

[ffelb]

Dear GSL maintainers:

This is a documentation "bug" I think.  The numerical integration example at

http://www.gnu.org/software/gsl/manual/html_node
       /Numerical-integration-examples.html#Numerical-integration-examples

should call

gsl_integration_workspace_free(w);

when it finishes, I think.

Was not bitten by this one, but others might be?

Foresee great success with gsl numerical integration, especially QAG.  Has
it been explicitly compared, e.g. in literature or a technical report, to
Matlab's quadl?

Ed