Implementing reference counted sorted_runs_data objects.
Fixing compiler gcc 4.8 warnings by introducing a STXXL_ASSERT() macro.
Fixing warnings issues by clang++ compiler and adding more sorting tests.
Improving TRY_COMPILE_HEADERS and making pq headers self contained.
Removing shared_ptr compat file, we will use counting_ptr instead.
Using counting_ptr to implement request_ptr (which was a reference counting ptr to request).
Incorporating large parts of the Design of STXXL from Roman's PhD thesis into doc/.
Incorporating more parts of Roman's PhD thesis into doc/.
Turning on QT_AUTOBRIEF and removing unnecessary \brief commands to declutter source code.
Inserting forced template instantiations into most template tests.
Moving vector tutorial into doxygen design.dox, putting function comments into vector.h and renaming template parameters for readability.
Merge remote-tracking branch 'upstream/master'
Extended design_vector section