D13585: Use LIB_SUFFIX for lmdb libdir rather than hardcode lib

[Andreas Sturmlechner]

asturmlechner added a reviewer: Baloo.

REPOSITORY
  R293 Baloo

REVISION DETAIL
  https://phabricator.kde.org/D13585

To: asturmlechner, #baloo
Cc: kde-frameworks-devel, #baloo, ashaposhnikov, michaelh, astippich, spoorun, 
ngraham, bruns, abrahams