Debugger: Move basic C-style array handling to dumper base class

Just cosmetics. Function was oddly named, in an odd place.

Change-Id: I8bfb33f7f41f01309f4b2be8a802d4093ae25e41
Reviewed-by: hjk <hjk121@nokiamail.com>
Debugger: Move more common GDB and LLDB dumper code to base

Change-Id: I798396014256afc3845ccdae6e740bbf6059bbf3
Reviewed-by: hjk <hjk121@nokiamail.com>
Debugger: Simplify pointer arithmetic in LLDB dumper

Change-Id: I1b8396014256afc3845ccdae6e740bbf6059bbf3
Reviewed-by: hjk <hjk121@nokiamail.com>