Removed explicit conversions from pointer to shared_ptr.

They're no longer valid on all compilers.
Generated ChangeLogs for version 1.3.

They are now simply the output of
$ git log --pretty=medium --date=rfc
for the required changesets.
let the calibration helper observe the evaluationDate and the floating rate index,
move the constructor code to performCalculations(),
provide swaption constructors specifying dates instead of tenors,
allow for non atm strike swaptions and a non unit nominal
Updated list of contributors.
Updated news for QuantLib 1.3.
remove volatility and nominal inspectors from swaptionhelper
add volatility inspector to calibrationhelper
Fixed reference dates for yield-based npv calculation.

Thanks to Nick Glass for the heads-up.
Using correct #define to check for x64 compilation.

This also removes the need to add a custom preprocessor definition
to the projects.
Also, the check was extended to VC++10 and 11.

Thanks to Dale Smith for the heads-up and the analysis.
Added warnings for reported test failures on Mac OS X 10.8.4.

Thanks to Richard Stanton for the report.
remove registration with evaluation date in base class, if needed in
derived classes, they should register by themselves
correct non matching #ifndef #define
Fixed data and checks for a few tests.
remove debug output, change error message text
remove debug output, change error message text
Prevent access violation when an empty helper vector is passed.
Prevent an access violation when an empty date vector is passed.
change input parameters used as return values to references
comment out useless code
change cached value due to corrections in PerturbativeBarrierOptionEngine,
increase precision in output messages
remove assignment to variable which is not used