Update bld.bat

both casadi and tropter on windows

Author: aymanhab

opensim/bld.bat

@@ -27,7 +27,7 @@ cmake ..\^
 	-DOPENSIM_C3D_PARSER=ezc3d^
 	-DOPENSIM_PYTHON_STANDALONE=ON^
 	-DOPENSIM_WITH_CASADI=ON^
-	-DOPENSIM_WITH_TROPTER=OFF^
+	-DOPENSIM_WITH_TROPTER=ON^
 	-DBUILD_TESTING=OFF^
 	-DBUILD_API_EXAMPLES=OFF^
 	-DOPENSIM_BUILD_INDIVIDUAL_APPS=ON^