- this is version 1.8.1.
Merge branch 'maint' into maint_1.8

Conflicts:
	.gitignore
Merge branch 'maint' into maint_1.8
- fixed updaterevision calls in VC project.
- put back a clean version file into the maintenance branch.
Merge branch 'maint' into maint_1.8
Merge branch 'maint_1.8'