[test][strategies] fix compilation errors for pythagoras and haversine
unit tests (introduced by the changes in pull request #47)
[test][strategies] add compile time check for existence of default
strategy for projected point and cross track
[test][strategies] update copyright headers
Merge pull request #50 from mkaravel/feature/distance-default-strategy

[test][strategies] fix compilation errors for pythagoras and haversine unit tests