Bug 97429 [build path] Native library attribute should be available on the container as well
RC1 Why don't we have a native library attribute for class path containers ?
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/CPListElement.java
String key= CPListElement.EXCLUSION;
		return addFilter(path, key);
	}
	
	public boolean addToInclusion(IPath path) {
		String key= CPListElement.INCLUSION;
		return addFilter(path, key);
	}
	
	public boolean removeFromExclusions(IPath path) {
		String key= CPListElement.EXCLUSION;
		return removeFilter(path, key);
	}
	
	public boolean removeFromInclusion(IPath path) {
		String key= CPListElement.INCLUSION;
		return removeFilter(path, key);
	}
	
	private boolean addFilter(IPath path, String key) {
		IPath[] exclusionFilters= (IPath[]) getAttribute(key);
		if (!JavaModelUtil.isExcludedPath(path, exclusionFilters)) {
			IPath pathToExclude= path.removeFirstSegments(getPath().segmentCount()).addTrailingSeparator();
			IPath[] newExclusionFilters= new IPath[exclusionFilters.length + 1];
			System.arraycopy(exclusionFilters, 0, newExclusionFilters, 0, exclusionFilters.length);
			newExclusionFilters[exclusionFilters.length]= pathToExclude;
			setAttribute(key, newExclusionFilters);
			return true;
		}
		return false;