[PATCH] Introduce new gold plugin option "relocation-pic"

[Rafael Espíndola]

> Since on Android only PIC code is supported.
> One reason for this is unsupported COPY relocation on Android.

If only pic code is supported, then every executable is PIE, no? My
understanding is that all that -pie does is

* Complain if code that is not position independent is found.
* Avoid relaxing PIC code to non PIC.

Given that the current setup works, it looks like the android linker
has no PIC->non PIC relaxations. In other words, passing -pie should
be a nop and we should always do it.

Do you see any other difference in the produced binaries when passing -pie?

Cheers,
Rafael