Update SlicerVMTK.

In the process of adding 'StenosisMeasurement3D' module to SlicerVMTK, a
dependency on 'ExtraMarkups' extension is introduced. The s4ext file is hereby
updated.

Author: chir-set

SlicerVMTK.s4ext

@@ -12,7 +12,7 @@ scmrevision master
 # list dependencies
 # - These should be names of other modules that have .s4ext files
 # - The dependencies will be built first
-depends NA
+depends ExtraMarkups
 
 # Inner build directory (default is ".")
 build_subdirectory inner-build