when compiling hte 0.7.2 (and .3) with gcc version 3,
it gives an error message in htapp.cc:2031.
It is &(ht_project *)project which causes the compiler
to stumble. I dunno how C++ does it, but if this was C,
(ht_project **)&project would work. Anyway, here is a
patch to fix that (in C++)