Auto merge of #90 - metajack:homu-libexpat, r=jdm
Auto merge of #90 - metajack:homu-libexpat, r=jdm

Add libexpat to Homu



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rwaweber/saltfs,setupminimal/saltfs,setupminimal/saltfs,servo/saltfs,setupminimal/saltfs,servo/saltfs,UK992/saltfs,UK992/saltfs,UK992/saltfs,ALikhachev/saltfs,rwaweber/saltfs,ALikhachev/saltfs,ALikhachev/saltfs,rwaweber/saltfs