[gold commit] Aligning segments in gold

[Cary Coutant]

> This appears to cause the following failure on powerpc64.
>
> `echo g++ -Bgcctestdir/ -m64 -W -Wall    -Werror -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -fmerge-constants -g -O -fno-inline -fno-use-linker-plugin   -o relro_test.so | sed -e 's/-Wp,-D_FORTIFY_SOURCE=[0-9][0-9]*//'` -shared -Wl,-z,relro relro_test_pic.o
> gcctestdir/collect-ld: internal error in set_offset, at /src/binutils-gdb/gold/output.cc:4686

Unfortunately, with the ppc64 toolchain I have, I can't reproduce this
error. Can you send me your copy of relro_test_pic.o? (Since I don't
have a native machine to test on, I had to cross-compile and link with
an x86-hosted gold. So that may have changed things.)

-cary