Add SHARED_RCFLAGS in unified Makefile template
Add SHARED_RCFLAGS in unified Makefile template

Also remove a spurious extra $(LDFLAGS)

Reviewed-by: Rich Salz <c04971a99e5a9ee80eaab4b1deb37e845b0bd697@openssl.org>

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl