Bug#951939: contextfree: FTBFS: src-common/cfdg.cpp:75:71: error: no matching function for call to ‘find(std::array, 18>::const_iterator, std::array, 18>::const_iterator, const string&)’

[John Horigan]

This bug is due to several source files using STL algorithms without
having the required #include <algorithm>. This will be fixed in
upstream and a new feature release of Context Free will be uploaded to
Debian soon.