cpptasks: Compile tasks for Apache Ant - undefinearg

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## undefinearg

### Description

Preprocessor macro undefinition.

### parameters

Attribute | Description | Type
if | Sets the property name for the 'if' condition. The define will be ignored unless the property is defined. The value of the property is insignificant, but values that would imply misinterpretation ("false", "no") will throw an exception when evaluated. | String
name | Set the name attribute | String
unless | Set the property name for the 'unless' condition. If named property is set, the define will be ignored. The value of the property is insignificant, but values that would imply misinterpretation ("false", "no") of the behavior will throw an exception when evaluated. | String