Split elf.inc, main asm files manage segments

[jbirddog]

Had a realization about how fasm handles segments, so include files now should not define what segments bytes belong to, but instead leave that up to the main asm file that is defining the executable.

main:

-rwxr-xr-x 1 u g 1064 Jun 17 21:19 blue
-rwxr-xr-x 1 u g  995 Jun 17 21:20 elf_test
-rwxr-xr-x 1 u g 1232 Jun 17 21:20 elf_test_hello_world

This branch:

-rwxr-xr-x 1 u g  952 Jun 17 21:13 blue
-rwxr-xr-x 1 u g  939 Jun 17 21:13 elf_test
-rwxr-xr-x 1 u g  920 Jun 17 21:13 elf_test_hello_world