Changelog updates for next release.
Minor cleanups
Fix, try/finally expression nodes were not supporting empty tried blocks.
GUI: Updated to latest.
Micro Optimization: Do not insist on preserving line number in final blocks

* If the final block does not touch line number, we need not preserve it.

* Needed for try/finally outside of frames.
virtualenv: Fixup for ".Python" links, code was incorrect that way.
Windows: Handle cases, where filenames are on other volumnes.

* The relative name for these cases is defined to be the absolute
  path then.

* This should enable to compile on volumes other than where Python
  is installed.
Standalone: Minor cleanup
Standalone MacOS: Fix getBinaryDirectory was returning path including binary.
Standalone MacOS: Update the binary path
Tests: Added "execfile" as an expression. Finally completes Issue#5.

* As of C-ish code generation, this is now resolved.

* Now that generated code doesn't have to treat everything in a statement
  this has become automatic.
Tests: Added test to demonstrate call argument deletion order. Corrects Issue#62.

* Fixed as a by-product of the new C-ish code generation.

* Expressions and their release are now explicitedly controlled and
  we do no longer rely on C++ destructor timing.
Added building helpers for try/finally nodes

* This handles building the statement sequences from single statements
  transparently

* As we are going to have a lot of these, this can help to keep the
  code simpler.
Fix, try/finally expressions that may only raise in their expression didn't compile.

* Need to check the expression as part of tried to decide if an exception
  handler needs to be generated.

* Became visible when increasing usage of it in later changes.
Temporary fix, SSA cannot be relied on yet.
Make locals dict use mere "PyObject *"

* The use the of the temporary class is replaced with manually
  releasing at function exit.

* In prepration to removing the used C++ class.
New pre-release.
Fix, the temp whitelist needs to be a stack for nested try/finally expressions.
Fix, the SSA didn't properly indicate merge traces as the current traces.
Allow return in try/finally with pass through frame guards

* This enables try/finally expressions inside list contractions.