ENH: Add dependency to extensions packaged on all platforms

See #1

CMakeLists.txt

@@ -10,7 +10,24 @@ set(EXTENSION_CONTRIBUTORS "Lucia Cevidanes (University of Michigan), Beatriz Pa
 set(EXTENSION_DESCRIPTION "Dental image analysis to support patient-specific decision making and assessment of the disease progression via registration of serial images.")
 set(EXTENSION_ICONURL "http://www.example.com/Slicer/Extensions/SlicerCMF.png")
 set(EXTENSION_SCREENSHOTURLS "http://www.example.com/Slicer/Extensions/SlicerCMF/Screenshots/1.png")
-set(EXTENSION_DEPENDS "NA") # Specified as a space separated string, a list or 'NA' if any
+set(EXTENSION_DEPENDS
+  # BoneTextureExtension
+  CMFReg
+  # EasyClip
+  MeshToLabelMap
+  MeshStatisticsExtension
+  ModelToModelDistance
+  PickAndPaintExtension
+  Q3DC
+  # ShapePopulationViewer
+  # ShapeVariationAnalyzer
+  # SPHARM-PDM
+  ) # Specified as a space separated string, a list or 'NA' if any
+
+# Not available as extension:
+#  DatabaseInteractorExtension
+#  GROUPS
+#  MFSDA_Python
 
 #-----------------------------------------------------------------------------
 # Extension dependencies