ld/ELF: explicitly place .note.gnu.property

x86 gas may produce .note.gnu.property by default. Hence the default
linker script would better also deal with that section, rather than
causing diagnostics when using --orphan-handling=. Replace all mis-
spellings that have accumulated.

To avoid needlessly relaxing expectations for two tests when run for
PPC 64-bit ELF targets, suppress the linker generating EH frame data
there.