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

examples/game-of-life/build/optimized.wat

@@ -11,10 +11,10 @@
  (global $assembly/index/w (mut i32) (i32.const 0))
  (global $assembly/index/h (mut i32) (i32.const 0))
  (global $assembly/index/s (mut i32) (i32.const 0))
+ (export "memory" (memory $0))
  (export "init" (func $assembly/index/init))
  (export "step" (func $assembly/index/step))
  (export "fill" (func $assembly/index/fill))
- (export "memory" (memory $0))
  (func $assembly/index/init (; 1 ;) (type $iiv) (param $0 i32) (param $1 i32)
   (local $2 i32)
   ;;@ assembly/index.ts:29:2

examples/game-of-life/build/untouched.wat

@@ -12,10 +12,10 @@
  (global $assembly/index/h (mut i32) (i32.const 0))
  (global $assembly/index/s (mut i32) (i32.const 0))
  (global $HEAP_BASE i32 (i32.const 8))
+ (export "memory" (memory $0))
  (export "init" (func $assembly/index/init))
  (export "step" (func $assembly/index/step))
  (export "fill" (func $assembly/index/fill))
- (export "memory" (memory $0))
  (func $assembly/index/init (; 1 ;) (type $iiv) (param $0 i32) (param $1 i32)
   (local $2 i32)
   (local $3 i32)