Provide support for Binutils' --no-dynamic-linker option.

GNU ld seems to write a PT_INTERP header into executables containing a
default (read: bogus) value if --dynamic-linker flag is not provided.
LLD is different in the sense that it omits it unless --dynamic-linker
is provided, which seems fair.

Binutils 2.26 added a new flag, --no-dynamic-linker, that can be used to
generate binaries without PT_INTERP. Let's go ahead and also add this
flag to LLD, so that we can invoke the linker in a portable way.

Reviewed by:	ruiu
Differential Revision:	http://reviews.llvm.org/D18723

llvm-svn: 265246