Build system: use LDFLAGS for building binaries
Build system: use LDFLAGS for building binaries

If LDFLAGS are specified externally, honor them when building binaries.
(They were already added as a variable to Makefile.in anyway.)

Signed-off-by: Christian Seiler <2314b2e3a4a1f7db165be2aafbf1efd78f28cc97@iwakd.de>

gonzoleeman/open-isns,gonzoleeman/open-isns,gonzoleeman/open-isns