[FIX] fixed DLL export macros in openswathalgo
[FIX] fixed macro positioning
[FIX] fixed remaining attribute warnings by moving the macros to the correct location
[BUILD] fixed error in cmake script occuring when boost was not found

 * only formating in SignalToNoiseEstimatorMedianRapid
Merge pull request #827 from aiche/feature/export-fixes

[FIX] fixes export macro warnings