message: Add --enable-debug configure flag to one of the travis jobs
  Other than that to the same stanza we added also --with-incompatible-bdb
  so that we could use system libraries also for the wallet functionality.
  After this changes this travis job will exclusively use system libraries
  for bitcoind/qt dependencies.
diff: @@ -102,9 +102,9 @@ matrix:
  env:
  - CXX=g++ CC=gcc
  - HOST=x86_64-unknown-linux-gnu
  - - PACKAGES="python3 qtbase5-dev qttools5-dev-tools protobuf-compiler libdbus-1-dev libharfbuzz-dev libprotobuf-dev"
  + - PACKAGES="python3 qtbase5-dev qttools5-dev-tools protobuf-compiler libdbus-1-dev libharfbuzz-dev libprotobuf-dev libdb5.3++-dev"
  - DEP_OPTS="NO_WALLET=1 NO_QT=1 ALLOW_HOST_PACKAGES=1"
  - - RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--with-gui=qt5 --enable-glibc-back-compat --enable-reduce-exports"
  + - RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-debug --with-incompatible-bdb --with-gui=qt5 --enable-glibc-back-compat --enable-reduce-exports"
  #Cross-Mac
  - compiler: gcc
  env:
  