QtCreator contaminates build-environment with shipped libraries

On linux systems QtCreator is installed with its own libraries, to reduce system depencies. For start a little wrapper script is used, that patches LD_LIBRARY_PATH. So the build has no chance to use libraries from original system.

Proposal:
store the original value of LD_LIBRARY_PATH to different variable name and use that variable name to setup the LD_LIBRARY_PATH for build sessions.

See ML-Thread: "[Qt-creator] confused about QtCreators behaviour"