Match template PCL style guide for the Eclipse formatter

This adds a space before the opening angle bracket:
```
template<typename T1, typename T2> class map
{
};
map<int, int> m;
```
to

```
template <typename T1, typename T2> class map
{
};
map<int, int> m;
```

This matches both
http://www.pointclouds.org/documentation/advanced/pcl_style_guide.php#classes
and
http://www.pointclouds.org/documentation/advanced/pcl_style_guide.php#id2