remove weird double spaces, remove /EXPORT from build.bat in favor of __declspec(dllexport)

code/kernel/ke_irq.h

@@ -3,5 +3,5 @@
 #include <hal_api.h>
 
 void KeIrqInitialize(const HAL_API *hal);
-void KeIrqRegister(uint8_t irq, void (*handler)(void));
+__declspec(dllexport) void KeIrqRegister(uint8_t irq, void (*handler)(void));
 void KeIrqDispatch(uint8_t irq);   // called from ke_syscall.asm