Added possibility to define patterns that must be present in the test log, so that test is considered OK only if all these patterns are found.
New REQUIRED statement is introduced for that, documented in dox/dev_guides/tests/tests.md.
Removed all uses of decho and dlog commands, added REQUIRED where necessary.
Command xdistcs is modified to output to Tcl instead of cout, and extended to report errors and warnings if distances are greater than tolerance (directly, instead of complex post-processing on Tcl level).
DEBUG mode for TODOs was removed (we should have no deviations in Debug mode).
Corrected indentation in DrawResources/TestCommands.tcl
HTML log will now highlight TODO statement causing IMPROVEMENT status, or REQUIRED statement causing FAIL, by corresponding color.
Added test case bugs/modalg_5/bug24204
Modified following test cases:
bugs modalg_3 bug605 - case with bad input data, command "settolerance w1 1.e-7" was added;
bugs modalg_4 bug629 - wrong case, now the algorithm can not build pipes on such profiles, test case was removed;
bugs modalg_4 bug13595_1, bug13595_1 - number of subshapes was has changed;
bugs modalg_5 bug23706_2 - square of resulting face was changed;
bugs modalg_5 bug23870_1, bug23870_2, bug23870_3, bug23870_4, bug23870_5 - the number of subshapes was changed.
