Add aliases for gentoo

aliases.d/gentoo.bash

@@ -0,0 +1,7 @@
+if [ -f /etc/gentoo-release ]
+then
+	alias emerge='sudo emerge'
+	alias etc-update='sudo etc-update'
+	alias revdep-rebuild='sudo revdep-rebuild'
+	alias eix='eix -F'
+fi