Backported fixes for Clang and Boost 1.57 from master.
Update ChangeLog and News for version 1.4.1.
Merge hotfix for Boost 1.57 and Clang.
Moved QuantLib version to 1.4.2 on the 1.4 branch.

The QuantLib-SWIG version stays the same (there were no changes
and no release there).
Prepare VC++ projects for future compiler version.
Consolidate VC++ configuration.
Fix configuration of a few VC++9 projects.

Some were missing the x64 target; others were missing a couple
of Debug/Release configurations.
Update download page for 1.4.1 release.
Merge latest changesets from 1.4.x branch.
Mention location of example file.

It wasn't obvious where the compilation should be run.
Thanks to Jack Drew for the heads-up.
Fix linking flag in Mac OS X instructions.
Merge pull request #170.
Merge pull request #171.
Merge development branch: clean up VC++ configuration.
Fix expected hash value for 32-bit targets.
Add bivariate cumulative student t distribution.

Thanks to Michal Kaut.

Closes #121.
Fix file names in project filters.
Export monotonic log-discount curve.

Also, add a few more traits for cubic interpolations.
Add Vecer engine for continuous-averaging Asian options.

Thanks to Bernd Lewerenz.
Fix inflation-rate interpolation.

Thanks to Amine Ifri for the heads-up.