Smoothing should completely honour verbose setting

In an effort to suppress some of the automatic output, I discovered `smoothing` was not passing on the `verbose` option to internal calls to `alm2map`. This mean that you keep getting
```
Sigma is 0.000000 arcmin (0.000000 rad) 
-> fwhm is 0.000000 arcmin
```
messages even when you've explicitly set `verbose=False`. This patch just ensures the verbose flags gets passed on.

The only other option I could see as being desirable would be explicitly passing `verbose=False` onto `alm2map` to silence the messages.