A slash typo in CMakeLists.txt

In CMakeLists.txt, DEB_PYTHON_BUILD_DIR is defined as follow with a trailing slash:

set(DEB_PYTHON_BUILD_DIR "${CMAKE_SOURCE_DIR}/bindings/python/")

But you use this variable like this:

set(DEB_PYTHON_OUTPUT_FILE_PREFIX "${DEB_PYTHON_BUILD_DIR}/dist")

It has double slash after concat of DEB_PYTHON_BUILD_DIR and /dist. It may cause errors in some curcumstances.

I hope you will fix this problem and I hope this will help improve your project.