Fixed dependencys getting added to unbuildable binaries

Author: ThadHouse

src/main/groovy/edu/wpi/first/nativeutils/rules/DependencyConfigRules.groovy

@@ -160,6 +160,9 @@ class DependencyConfigRules extends RuleSource {
             def nativeBinaries = binaries.findAll { BuildConfigRulesBase.isNativeProject((BinarySpec) it) }
             nativeBinaries.each { oBinary ->
                 def binary = (NativeBinarySpec) oBinary
+                if (!binary.buildable) {
+                    return
+                }
                 def component = binary.component
 
                 def headerConfigurationName = "${config.groupId}${config.artifactId}${config.headerClassifier}".toString()