[Asan] refactor printing description for asan heap addresses

[kcc1, 2012-09-17 14:07:07]

remind me, please, what problems does this solve?

[samsonov, 2012-09-17 14:24:12]

On 2012/09/17 14:07:07, kcc1 wrote:
> remind me, please, what problems does this solve?

The original goal was to make a uniform way of printing error reports for
different kinds of error reports and gather all relevant error-reporting code
spread around the runtime to a single place. This is a final piece of it - I
don't really think describing the heap location is part of allocator.

[kcc1, 2012-09-17 14:29:17]

LGTM