Handle R_SPARC_WPLT30 relocations against a local symbol. Fixes building the
audio/openal port with clang.

ok guenther@

Tests about TLS relocations that should only apply when building a
shared library need to test for 'shared && !executable' so that PIE
files can optimize to initial-exec and local-exec models

ok kettenis@

Use SYMBOL_CALLS_LOCAL() to determine whether we can drop relocations for a
symbol such that hidden symbols get handled properly. Gets rid of the
spurious DT_TEXTREL entries seen with (typically) C++ code.

ok deraadt@, guenther@

Don't generate PLT entries for symbols defined in a regular object for
-static -pie.

On sparc64, avoid generating GLOB_DAT relocs and convert certain absolute
relocs into RELATIVE relocs when we can for -static -pie.

With this change we don't need -Wl,-Bsymbolic anymore when building -static
-pie binaries.

ok millert@, kurt@

Teach ld(1) not to add a PT_INTERP entry for -static -pie.

ok kurt@

Bring in a change from post 2.17 (but still GPLv2) binutils
to avoid BFD64 host ifdefs in 32 bit only sparc targets.

elfxx-sparc.c 1.31 and elfxx-sparc.h 1.8

Needed to compile sparc from a 64 bit host.

ok miod@

branches: 1.1.1;
Initial revision