site.conf: update gumstix sample site.conf to reflect name change from "packages" to "recipes"
site.conf: update gumstix sample site.conf to reflect name change from "packages" to "recipes"

scottellis/overo-oe,yyli/overo-oe,yyli/overo-oe,nzjrs/overo-openembedded,nzjrs/overo-openembedded,John-NY/overo-oe,John-NY/overo-oe,scottellis/overo-oe,scottellis/overo-oe,nzjrs/overo-openembedded,nzjrs/overo-openembedded,nzjrs/overo-openembedded,yyli/overo-oe,yyli/overo-oe,John-NY/overo-oe,nzjrs/overo-openembedded,scottellis/overo-oe,nzjrs/overo-openembedded,yyli/overo-oe,John-NY/overo-oe,scottellis/overo-oe,yyli/overo-oe,John-NY/overo-oe,scottellis/overo-oe,scottellis/overo-oe,yyli/overo-oe,John-NY/overo-oe,yyli/overo-oe,John-NY/overo-oe