Does not build with Link Time Optimization

[tillea]

Hi,
the Debian packaged plast received a bug report since the build results in

/usr/bin/ld: ./obj-sse3/./src/index/impl/retrievall.c:1160: undefined reference to `get_packed_value'

Just to let you know about this issue. For the moment we will disable Link Time Optimization in this Debian package.

Kind regards, Andreas.