add more i386 elf relocs

[codeshaunted]

Add sizes and enable implicit addend support for R_386_GOT32, R_386_PLT32, R_386_GOTOFF, and R_386_GOTPC.

This passes all pre-commit except for cargo fmt. It was reformatting nearly all files for some reason so I disabled it locally. Let me know if you know how to fix that. Fixed!

[LagoLunatic]

This passes all pre-commit except for cargo fmt. It was reformatting nearly all files for some reason so I disabled it locally. Let me know if you know how to fix that.

cargo +nightly fmt

[tomsons26]

if R_386_PC32 is there and R_386_16 is being added, then i guess R_386_PC16 should too?

[codeshaunted]

if R_386_PC32 is there and R_386_16 is being added, then i guess R_386_PC16 should too?

The size for R_386_16 was actually already there for some reason, just without implicit addend support. I can add it later today if that would be desired.