Fixup GAS/binutils assembly

[ZERICO2005]

Bug fixes:

• added missing @function from .global/.weak, this is necessary for preventing these warnings from binutils:

toolchain/CEdev/binutils/bin/z80-none-elf-ld: warning: strcmp.o: missing .note.GNU-stack section implies executable stack
toolchain/CEdev/binutils/bin/z80-none-elf-ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker

• removed @function from .local
• fixed extern --> .extern
• fixed section --> .section

Formatting:

• canonicalized the order of @function declarations (so .type _func, @function is always after its corresponding .global/.weak _func.
• Enforce using 0x012345/$012345 instead of 0012345h
• fixed .assumes to assumes in comments
• switched ADL=1, adl = 1, and etc to adl=1 so everything is consistent toolchain wide.

[ZERICO2005]

I think I will deal with .L__label, L__label, and .local _func \ .type _func, @function in a separate PR