Join modifications from BR_Dev_For_4_0 tag V4_1_1.
Join modifications from branch BR_DEBUG_3_2_0b1
Join modifications from branch OCC_debug_for_3_2_0b1
Join modifications from branch OCC_development_for_3_2_0a2
Merge from OCC_development_generic_2006 Preparation of 3.2.0a1
Join modifications from branch BR_3_1_0deb
Fix of compilation problems on some platforms
PAL8238 - Hypothesis for non-regular 1D meshing
PAL9391
Remove not used files
New files for operation mechanism and mesh redesine
PAL8238
Add in GUI control for merging equal elements
IPAL9200
SMH: Preparation version 3.0.0 - merge (HEAD+POLYWORK)
Merge with OCC_development_01
Merge with OCC-V2_1_0_deb
Merge with version on tag OCC-V2_1_0d
DCQ : Merge with Ecole_Ete_a6.
Merge br_enable_import_mesh. Enable import mesh and save/load SMESH study.