Remove empty lines in disasmview to remove visual noise.

Port over part of the callstack code, still missing function name lookup
and navigation on double click. This is just an intermediate commit, I
don't want to have to rebase this again when I contine to work on it.

New this:
![image](https://f.cloud.github.com/assets/465677/1608225/820aa34a-54e2-11e3-80d0-d7b667106888.png)

Old this:

![image](https://f.cloud.github.com/assets/465677/1608228/ebd6d280-54e2-11e3-9625-b3a9d04cc74e.png)