premake4: don't use recursive file globbing in LinearMath and BulletCollision

src/BulletCollision/premake4.lua

@@ -6,6 +6,16 @@
 		"..",
 	}
 	files {
-		"**.cpp",
-		"**.h"
+		"*.cpp",
+		"*.h",
+		"BroadphaseCollision/*.cpp",
+		"BroadphaseCollision/*.h",
+		"CollisionDispatch/*.cpp",
+                "CollisionDispatch/*.h",
+		"CollisionShapes/*.cpp",
+		"CollisionShapes/*.h",
+		"Gimpact/*.cpp",
+		"Gimpact/*.h",
+		"NarrowPhaseCollision/*.cpp",
+		"NarrowPhaseCollision/*.h",
 	}

src/LinearMath/premake4.lua

@@ -6,6 +6,6 @@
 		"..",
 	}
 	files {
-		"**.cpp",
-		"**.h"
+		"*.cpp",
+		"*.h"
 	}