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Ruby makes use of the lesser known DLDFLAGS to compose flags passed to
the linker. Since DLDFLAGS is composed of arch, ldflags and dldflags
instead of overwriting DLDFLAGS we drop the correct flags into
dldflags. (lowercase vs uppercase)

This will avoid the following QA warnings, such as:
No GNU_HASH in the elf binary: './tmp/work/core2-64-overc-linux/ruby-shadow/2.4.1-r0/packages-split/ruby-shadow/usr/lib64/ruby/gems/2.2.0/gems/ruby-shadow-2.4.1/lib/shadow.so'
No GNU_HASH in the elf binary: './tmp/work/core2-64-overc-linux/ruby-shadow/2.4.1-r0/packages-split/ruby-shadow/usr/lib64/ruby/gems/2.2.0/extensions/x86_64-linux/2.2.0/ruby-shadow-2.4.1/shadow.so' [ldflags]
Signed-off-by: Mark Asselstine <mark.asselstine@windriver.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>