fix export macro name in comment

Change-Id: I4ecc277ad71cb8ea0f0f3693cf0e2fbdabb8d2f0
change linkage of functions to match new library

Change-Id: I3790acd12d817b994825fce18f2c3e4943b8d3c4
Merge topic 'SIMPLEITK-450_BreakUpLabelStatistics' into next

591e27b change linkage of functions to match new library
8867058 fix export macro name in comment