[WIP] Like

Text matching via globstrings

### Example

```Python
In [1]: from blaze import *

In [2]: L = [[1, 'Alice',   100],
     [2, 'Bob',    -200],
     [3, 'Charlie', 300],
     [4, 'Dennis',  400],
     [5, 'Edith',  -500]]

In [3]: t = Table(L, columns=['id', 'name', 'amount'])

In [4]: t.like(name='Al*')
Out[4]: 
   id   name  amount
0   1  Alice     100

In [5]: t.like(name='*e*')
Out[5]: 
   id     name  amount
0   1    Alice     100
1   3  Charlie     300
2   4   Dennis     400

```