Adding much longer introduction text from old paper.
Moving rest of tex tutorial into doxygen: phone billing example as tutorial.
Merge github.com:bingmann/stxxl into kernelaio
Extending copy_file example with different vector writing methods.
Cleaning stxxl::timer and adding a scoped_print_timer for easy time measurement via c++ scopes.
Adding new test_vector_writer to check different methods of writing directly to a vector's blocks.
Replacing BIDArray implementation with simple_vector, which is identical.
Fixing compilation on MSVC 2005. Had to change many types in vector due to 32-bit system.
Moving ilog2_floor/ceil to utils.h and replace all occurrances of log2_floor/ceil with ilog2s.
Fixing compilation issue of simple_vector.h and boostfd.
Renaming parse_filesize to parse_SI_IEC_filesize and changing signature.
Starting to combine tools into one stxxl_tool program.
Combining benchmark_disks, benchmark_files and create_files into stxxl_tool program.
Breaking up tutorial.dox into separate files for each page.
Merge ../stxxl into kernelaio

Conflicts:
	lib/io/create_file.cpp
Initial work on documentation, big commit.
Fixing main tutorial page with tutorial_... anchors.
Added STXXL Vector tutorial section, Added STXXL Vector examples
Added STXXL tutorial section, added STXXL stack examples
Added STXXL Priority Queue tutorial section, Added STXXL Priority Queue examples