[gjs] (23 commits) Non-fast-forward update to branch wip/ptomato/mozjs38

[Philip Chimento <pchimento src gnome org>]

The branch 'wip/ptomato/mozjs38' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  cf4d274... object: Refactor to use GjsMaybeOwned instead of keep-alive
  6c55593... WIP - object: Fully use GjsMaybeOwned wrapper
  66ae7e8... object: Trace vfunc trampolines
  4124f71... build: Build with mozjs38
  24804fc... docs: Overview of new JS features in NEWS
  ab68552... js: AutoValueVector's [] operator is rooted
  e85b10d... js: Adapt to new JS_NewObject() API
  bc3c092... js: Adapt to new JS_DefinePropertyById() API
  0398ebb... js: Rename JS_CallHeapFooTracer()
  0270119... js: Discontinue JSClass stubs
  54b7856... js: Adapt to new JS_SetErrorReporter() API
  13395fb... constructor-proxy: Adapt to new js::DirectProxyHandler API
  9fb417f... runtime: Adapt to new JSFinalizeCallback
  c5101a4... js: Adapt to new mozilla::Maybe API
  8e219cb... js: Adapt to new signature of resolve operation
  747d9ed... js: Accommodate both Latin-1 and two-byte strings
  a4b5b12... js: JSNative accessors in JS_DefineProperty()
  0014317... js: Fix misc APIs for mozjs38
  fb617dd... js: Various SpiderMonkey 38 improvements
  2c24006... WIP - js: Update weak pointers after GC
  1a683cf... WIP - importer: Switch to eager enumeration
  74eee0a... WIP - importer: Switch back to lazy enumeration

Commits added to the branch:

  0ff0846... jsapi-util-root: Don't destroy GjsMaybeOwned in notify
  0f4851f... object: Refactor to use GjsMaybeOwned instead of keep-alive
  0276437... WIP - object: Fully use GjsMaybeOwned wrapper
  74ce435... object: Trace vfunc trampolines
  4ea35a9... build: Build with mozjs38
  bc5be20... docs: Overview of new JS features in NEWS
  a55c0b2... js: AutoValueVector's [] operator is rooted
  67ee433... js: Adapt to new JS_NewObject() API
  eb29121... js: Adapt to new JS_DefinePropertyById() API
  81a2c7d... js: Rename JS_CallHeapFooTracer()
  4ee10fe... js: Discontinue JSClass stubs
  5b20f9a... js: Adapt to new JS_SetErrorReporter() API
  de4fdd0... constructor-proxy: Adapt to new js::DirectProxyHandler API
  599a3ac... runtime: Adapt to new JSFinalizeCallback
  53c02e6... js: Adapt to new mozilla::Maybe API
  936aa86... js: Adapt to new signature of resolve operation
  5c3c933... js: Accommodate both Latin-1 and two-byte strings
  bbb9915... js: JSNative accessors in JS_DefineProperty()
  99ca93b... js: Fix misc APIs for mozjs38
  b764dcc... js: Various SpiderMonkey 38 improvements
  5611aed... WIP - js: Update weak pointers after GC
  f59fa02... WIP - importer: Switch to eager enumeration
  6ed1784... WIP - importer: Switch back to lazy enumeration