Minor refactoring / code cleanup
Improve array evaluation support

* First of a few commits to allow for evaluating arrays of arbitrary
  types
* Adds support for 32 bit integer arrays
Adding info sources
Added info functions
Added doc for info command
Syntax cleanup
Prefer funcs to functions
Improve array type output
Use ptrsize instead of assuming
Groundwork for info locals and info args
Slight improvement for readIntSlice
Extract function to set slice len
Only find variables in the right scope when printing
Remove unnecessary type conversion
Merge branch 'master' of https://github.com/derekparker/delve

Conflicts:
	proctl/variables.go