changed nodes hierarchy

SVN-Revision: 69056
experimental nodes structure

SVN-Revision: 69057
tests redesigned

SVN-Revision: 69088
tests redesigned

SVN-Revision: 69089
execution time tests added

SVN-Revision: 69112
tests added

SVN-Revision: 69197
inconsistent names changed

SVN-Revision: 69448
gcc compilation errors corrected

SVN-Revision: 69572
branches development discontinued

SVN-Revision: 71957