fixed useages of the hardware specific 0xE40000 address

[ZERICO2005]

Removed usage of the 0xE40000 address from standard/common C functions (such as bzero).

boot_(v)snprintf and boot_(v)asprintf still use the 0xE40000 address in their implementation. Which should be okay, since they are platform specific functions.

Since (v)snprintf and (v)asprintf are standard/common C functions, I have removed the option to have them link to boot_(v)snprintf and boot_(v)asprintf.

[mateoconlechuga]

Can you define the linker variable HARDWARE=TICE and only use E40000 if this is defined for the hardware being used?

[ZERICO2005]

Added -i $(call QUOTE_ARG,__TICE__ := 1) \ to makefile.mk. if defined __TICE__ is used to check if the hardware/platform is the Ti84/83CE.

Currently, the macro is only defined in ASM and not in C. I am not sure if that is the correct way to define the macro in makefile.mk