0027719: HLRBrep_Algo incorrect output

Intersection of curves and surfaces in HLRBRep is corrected: parametric limits of face are used instead of parametric limits of surface

Building of outlines (Contap_Contour) is corrected: method ComputeCloseLine is now used in all cases.

Correction of HLRBRep_Surface: usage of UVbounds-option

Correction of test cases according to the new behavior.

tests/bugs/modalg_6/bug27720_3

@@ -0,0 +1,26 @@
+puts "============"
+puts "OCC27720"
+puts "============"
+puts ""
+######################################################
+# HLRBrep_Algo BSpline missing edges
+######################################################
+
+pload QAcommands
+
+restore [locate_data_file bug27720_BSpline.brep] a
+
+set viewname "bottom"
+
+top
+clear
+
+OCC27341 result a ${viewname}
+build3d result
+
+fit
+
+checkprops result -l 0.958458
+checknbshapes result -vertex 52 -edge 26
+
+checkview -screenshot -2d -path ${imagedir}/${test_image}.png