core: rename .text, .data and .bss to .text16, .data16, .bss16

Rename the .text, .data and .bss sections to .text16, .data16 and
.bss16, in anticipation of being linked with compiler-generated 32-bit
code, which presumably would like to use the standard section names.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
40 files changed