moving these to a more intuitive spot

BUILD.bazel

@@ -18,4 +18,8 @@ go_library(
     srcs = ["version.go"],
     importpath = "code.ndumas.com/ndumas/gomud",
     visibility = ["//visibility:public"],
+    x_defs = {
+        "code.ndumas.com/ndumas/gomud.VERSION": "{STABLE_GIT_VERSION}",
+        "code.ndumas.com/ndumas/gomud.BUILD": "{STABLE_GIT_COMMIT}",
+    },
 )

cmd/echo/BUILD.bazel

@@ -22,10 +22,6 @@ go_binary(
     name = "echo",
     embed = [":echo_lib"],
     visibility = ["//visibility:public"],
-    x_defs = {
-        "code.ndumas.com/ndumas/gomud.VERSION": "{STABLE_GIT_VERSION}",
-        "code.ndumas.com/ndumas/gomud.BUILD": "{STABLE_GIT_COMMIT}",
-    },
 )
 
 go_cross_binary(