Add Royal Wedding bank holiday to UK calendar.

Thanks to Whit Armstrong for the heads-up.
Remove unused assignment.

The value is overwritten a few lines later.
Avoid shadowing data member with constructor argument.

This could cause the data member to be given a null value.
Remove duplicated assignments.
Remove unused test parameter.
Removed extra calculations.

Apparently, they were added to nudge the compiler into not
optimizing method calls away. They were replaced by a proper
update method.
Allow auto-linking for VC++12.

We still don't have projects for VC++12; this change allows one
to use the VC++11 solution and auto-link the generated library.
Update changelog.
Use corrected rate in weighted average.
Correct exCouponDate on last coupon
Merge pull request #78.
Merge branch 'R01040x-branch' of https://github.com/lballabio/quantlib into R01040x-branch
Fix upper/lower bound calculation in model constraint.

Backported from master.
Fixed a Schedule bug.

A combination of backwards generation and end-of-month convention
could result in missing or duplicated first dates.

Thanks to Nicholas Manganaro for the heads-up.
Update ChangeLog.
add upper and lower bound to projected constraint
Fix a few Doxygen comments.
Bump version number to 1.4.1.
Merge branch 'R01040x-branch' of https://github.com/lballabio/quantlib
updated version number