Support for ~/.pullv, filtering by type, glob/fnmatch of repo name, path.

`$ pullv`

`$ pullv -t git`
`$ pullv -t git hg`

`$ pullv -r django*`

`$ pullv -r django hi*`

To only update repos in ~/workspace
`$ pullv -p ~/workspace/`

$ pullv

determine automatically if `-p`

``` python
['./', '/', '~', '../']
```

determine automatically if `-t`

``` python
['git', 'hg', 'svn']
```

determine automatically if `-r`

``` python
'[a-z]'
```
