Fix compilation in Visual Studio 2013.
Use .at(x) instead of [x] for addrinfo.

To avoid possibly inserting an element.
Fix 32-bit truncation in hexStringTo64UInt().
Fix crashes on x64 when selecting ordinals in list.
Merge pull request #6 from unknownbrackets/64bit-fix

Fix issues in 64-bit address handling
Add a simple method to ask the process for symbols.

This allows jit compiled functions to be identified and profiled (so long
as they are not recompiled during sampling.)  Must be explicitly supported
by the target application.
Use a timeout in case the target is hanging.