cppcheck warnings for Arx in branch 1.2.1

• constStatement (1)
• constVariable (1)
• constVariableReference (1)
• cstyleCast (1)
• legacyUninitvar (1)
• redundantCondition (1)
• uselessOverride (1)
• badBitmaskCheck (2)
• constParameterPointer (2)
• constParameterReference (2)
• ctuOneDefinitionRuleViolation (2)
• unreadVariable (2)
• useStlAlgorithm (2)
• noConstructor (3)
• unknownMacro (3)
• useInitializationList (3)
• preprocessorErrorDirective (4)
• shadowFunction (5)
• uselessCallsSubstr (5)
• unusedStructMember (6)
• constVariablePointer (10)
• knownConditionTrueFalse (18)
• uninitMemberVar (26)
• duplInheritedMember (48)
• missingOverride (198)