Bug #1912 - Merged the changes and enhancements from upstream into 'master'
Merge branch 'b1912-merge-upstream-to-master'
Merge branch 'master' of https://github.com/openigtlink/OpenIGTLink

Conflicts:
	CMakeLists.txt
	Source/igtlutil/igtl_position.h
#49: Avoid crash on division by zero, which should never happen
Merge branch '49-div-by-zero-image-spacing' of https://github.com/NifTK/OpenIGTLink into 49-div-by-zero-image-spacing
ENH: Update patch number.
Merge branch '49-div-by-zero-image-spacing'