add collision and inverse dynamics unit tests to cmake, .travis.yml and appveyor.yml

(more unit tests will follow, once this setup works)

test/collision/CMakeLists.txt

@@ -0,0 +1,36 @@
+ 
+INCLUDE_DIRECTORIES(
+	.
+	../../src
+	../gtest-1.7.0/include
+)
+
+
+#ADD_DEFINITIONS(-DGTEST_HAS_PTHREAD=1)
+ADD_DEFINITIONS(-D_VARIADIC_MAX=10)
+
+LINK_LIBRARIES(
+ LinearMath gtest
+)
+
+
+	ADD_EXECUTABLE(Test_Collision
+		main.cpp
+		../../src/BulletCollision/NarrowPhaseCollision/btVoronoiSimplexSolver.cpp
+		../../src/BulletCollision/NarrowPhaseCollision/btVoronoiSimplexSolver.h
+		../../src/BulletCollision/CollisionShapes/btSphereShape.cpp
+		../../src/BulletCollision/CollisionShapes/btMultiSphereShape.cpp
+		../../src/BulletCollision/CollisionShapes/btPolyhedralConvexShape.cpp
+		../../src/BulletCollision/CollisionShapes/btConvexShape.cpp
+		../../src/BulletCollision/CollisionShapes/btConvexInternalShape.cpp
+		../../src/BulletCollision/CollisionShapes/btCollisionShape.cpp
+		../../src/BulletCollision/CollisionShapes/btConvexPolyhedron.cpp
+	)
+
+ADD_TEST(Test_Collision_PASS Test_Collision)
+
+IF (INTERNAL_ADD_POSTFIX_EXECUTABLE_NAMES)
+			SET_TARGET_PROPERTIES(Test_Collision PROPERTIES  DEBUG_POSTFIX "_Debug")
+			SET_TARGET_PROPERTIES(Test_Collision PROPERTIES  MINSIZEREL_POSTFIX "_MinsizeRel")
+			SET_TARGET_PROPERTIES(Test_Collision PROPERTIES  RELWITHDEBINFO_POSTFIX "_RelWithDebugInfo")
+ENDIF(INTERNAL_ADD_POSTFIX_EXECUTABLE_NAMES)

test/collision/main.cpp

@@ -179,12 +179,12 @@ void testSphereSphereDistance(SphereSphereTestMethod method, btScalar abs_error)
         ASSERT_EQ(btScalar(0), distInfo.m_distance);
     }
     
-    for (int rb=1;rb<10;rb++)
-        for (int z=-20;z<20;z++)
+    for (int rb=1;rb<5;rb++)
+        for (int z=-5;z<5;z++)
         {
-            for (int j=1;j<10;j++)
+            for (int j=1;j<5;j++)
             {
-                for (int i=-20;i<20;i++)
+                for (int i=-5;i<5;i++)
                 {
                     if (i!=z)//skip co-centric spheres for now (todo(erwincoumans) fix this)
                     {