upx build error

[Doug Henry]

upx package from current does not build properly because linking to ucl
fails.  Including LDFLAGS option fixes this problem.

%build
   ( cd src
     %{l_make} %{l_mflags -O} \
         CC="%{l_cc}" \
         UPX_UCLDIR="%{l_prefix}" \
         LDFLAGS="%{l_ldflags}"
   ) || exit $?
   ( cd doc
     pod2man upx.pod >upx.1
   ) || exit $?