fix some travis BUILD_ARGS and add a new one
use bundled physfs on win and osx

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extra : histedit_source : 0be9032923d6ee19e24cb2a9c73993f2514b2eb7%2C62c4b47efa4e0714991db186c47b07b9d441857c
fix build on travis

--HG--
extra : histedit_source : 80091c3ef5ae2de11ce3d3c84f76b059540e5c56