Rename memory instructions; Rework constant handling (#177)

* Rename memory instructions as proposed by the bulk-memory-operations spec.
* Rename memory manager functions to memory.* as well
* Remove automatic inlining of constant globals (Binaryen does this now)
* Improve 'const' enum compatibility
* Improve module-level export generation
* Enable the inline decorator for constant variables
* Add ERROR, WARNING and INFO macros that emit a user-defined diagnostic
* Reintroduce builtin decorator so these can appear anywhere in stdlib again
* Inline isNaN and isFinite by default
* Make an interface around gc.* similar to memory.*
* Emit an error when trying to inline a mutable variable
* Slim down CI stages
* Add a more convenient tracing utility for debugging
* Implement some prequesites for an eventual bundled GC

std/assembly/env.ts

@@ -1,7 +1,16 @@
-/** Environment abort function called where assertions evaluate to false / on throw. */
 declare function abort(
   message?: string | null,
   fileName?: string | null,
   lineNumber?: u32,
   columnNumber?: u32
 ): void;
+
+declare function trace(
+  message: string,
+  n?: i32,
+  a0?: f64,
+  a1?: f64,
+  a2?: f64,
+  a3?: f64,
+  a4?: f64
+): void;