Use the actual names of the symbols.

getName returns a presentation name used elsewhere.
Merge pull request #25 from wvdschel/master

Fixed SDK detection on Windows, now works with at least OpenDylan 2013.1...
Fix formatting.
Fix issue with _ variables
Fix issues parsing library and module definitions
Add syntax highlight for some tokens

This commit also makes the DylanLexer class to be public, so it can be
used by subpackages.
List some example plugins to look at.
Missing license/copyright blocks.
Switch to using file indexers.

This is much faster.
DylanChooseByNameContributor -> DylanSymbolContributor
Fix error in previous commit.
Work around test failure.

The test was failing because this search was returning null as the
INSTANCE hadn't been created and registered yet.
Switch to some generic definer icons.
Customized icons for each definer type.
Added relative anchor to the new dylan file action, fixes issue #28.