Compilation changes

Few compile time attempts to speed things up

Swap include guards for pramga once
Change compile options in the cmakeLists for source
generate a pch

small tweaks

Engine/source/platform/input/IInputDevice.h

@@ -19,6 +19,8 @@
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 // IN THE SOFTWARE.
 //-----------------------------------------------------------------------------
+#pragma once 
+#pragma once 
 
 #ifndef _IINPUTDEVICE_H_
 #define _IINPUTDEVICE_H_

Engine/source/platform/input/IProcessInput.h

@@ -19,6 +19,7 @@
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 // IN THE SOFTWARE.
 //-----------------------------------------------------------------------------
+#pragma once 
 
 #ifndef _I_PROCESSINPUT_H_
 #define _I_PROCESSINPUT_H_

Engine/source/platform/input/event.h

@@ -26,6 +26,8 @@
 /// in this file.
 
 ///
+#pragma once 
+#pragma once 
 #ifndef _EVENT_H_
 #define _EVENT_H_