ego now builds and is used.

This needed lots of refactoring to ego --- not all platforms have ego descr
files, and ego will just crash if you invoke it without one. I think originally
it was never intended that these platforms would be used at -O2 or above.

Plats now only specify the ego descr file if they have one.

util/ego/build.lua

@@ -0,0 +1,58 @@
+local function build_ego(name)
+	cprogram {
+		name = name,
+		srcs = { "./"..name.."/*.c" },
+		deps = {
+			"util/ego/share+lib",
+			"modules/src/em_data+lib",
+			"h+emheaders",
+		},
+		vars = {
+			["+cflags"] = {"-DVERBOSE", "-DNOTCOMPACT"}
+		}
+	}
+end
+
+build_ego("bo")
+build_ego("ca")
+build_ego("cf")
+build_ego("cj")
+build_ego("cs")
+build_ego("ic")
+build_ego("il")
+build_ego("lv")
+build_ego("sp")
+build_ego("sr")
+build_ego("ud")
+
+cprogram {
+	name = "em_ego",
+	srcs = { "./em_ego/em_ego.c" },
+	deps = {
+		"modules/src/print+lib",
+		"modules/src/string+lib",
+		"modules/src/system+lib",
+		"modules+headers",
+		"h+emheaders",
+	}
+}
+
+installable {
+	name = "pkg",
+	map = {
+		["$(PLATDEP)/em_ego"] = "+em_ego",
+		["$(PLATDEP)/ego/bo"] = "+bo",
+		["$(PLATDEP)/ego/ca"] = "+ca",
+		["$(PLATDEP)/ego/cf"] = "+cf",
+		["$(PLATDEP)/ego/cj"] = "+cj",
+		["$(PLATDEP)/ego/cs"] = "+cs",
+		["$(PLATDEP)/ego/ic"] = "+ic",
+		["$(PLATDEP)/ego/il"] = "+il",
+		["$(PLATDEP)/ego/lv"] = "+lv",
+		["$(PLATDEP)/ego/ra"] = "./ra+ra",
+		["$(PLATDEP)/ego/sp"] = "+sp",
+		["$(PLATDEP)/ego/sr"] = "+sr",
+		["$(PLATDEP)/ego/ud"] = "+ud",
+		"./descr+pkg",
+	}
+}