Variables starting with `c' in makedefs

• COMP_OBJ_DIR makedefs/MakeInc.rule:342
• component makedefs/MakeInc.rule:418
• COMPONENT_LIST makedefs/MakeInc.dir:10
• comp_subdir makedefs/MakeInc.dir:292
• COMP_SUBDIRS_ makedefs/MakeInc.dir:290
• Current makedefs/MakeInc.dir:19