CMake Nightly Date Stamp
CMake Nightly Date Stamp
Fix handling of empty entries in include_directories

This is a regression introduced in commit 0d46e9a0 (Store includes
from the same include_directories call together., 2013-01-20).

Reported at

 http://thread.gmane.org/gmane.comp.programming.tools.cmake.user/46695/focus=7847
Merge topic 'fix-include_directories-whitespace-handling' into next

1e21ce2 Fix handling of empty entries in include_directories
03071d3 CMake Nightly Date Stamp
cd82e3f CMake Nightly Date Stamp