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.
fix transformation and inverse
formatting
Mention location of example file.

It wasn't obvious where the compilation should be run.
Thanks to Jack Drew for the heads-up.
add test cases
replace macro MINSTRIKE by parameter cutoffStrike in the constructor (with same value as default, no no change of behaviour is implied by this)
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.
optimized npv and other calcution minimizing virtual calls relying on sorted cashflows