Added empty functions for gamepad buttons and references in codegen

...rtiss.af3.platform.raspberry/trunk/lib/inc/CanConnector.h

org.fortiss.af3.platform.raspberry/trunk/lib/inc/Gamepad.h

...s.af3.platform.raspberry/trunk/lib/inc/LaserRangeFinder.h

...rtiss.af3.platform.raspberry/trunk/lib/src/CanConnector.c

org.fortiss.af3.platform.raspberry/trunk/lib/src/Gamepad.c

...s.af3.platform.raspberry/trunk/lib/src/LaserRangeFinder.c

...enerator/executable/LaserRangeFinderSensorExecutable.java

...berry/generator/executable/gamepad/Button1Executable.java

...berry/generator/executable/gamepad/Button2Executable.java

...berry/generator/executable/gamepad/Button3Executable.java

...berry/generator/executable/gamepad/Button4Executable.java

...erry/generator/executable/gamepad/ButtonL1Executable.java

...erry/generator/executable/gamepad/ButtonL2Executable.java

...erry/generator/executable/gamepad/ButtonR1Executable.java

...erry/generator/executable/gamepad/ButtonR2Executable.java

...y/generator/executable/gamepad/Left_StickXExecutable.java

...y/generator/executable/gamepad/Left_StickYExecutable.java

.../generator/executable/gamepad/Right_StickXExecutable.java

.../generator/executable/gamepad/Right_StickYExecutable.java