split apart `*load-macros*` and `*analyze-deps*` in analyzer parse 'ns case. Tweak `parse-ns` helper behavior, `*load-macros*` and `*analyze-deps*` always default to `false`. Document the intent of `cljs.analyzer/parse-ns`.
split apart `*load-macros*` and `*analyze-deps*` in analyzer parse 'ns case.
Tweak `parse-ns` helper behavior, `*load-macros*` and `*analyze-deps*` always
default to `false`. Document the intent of `cljs.analyzer/parse-ns`.

mstang/clojurescript,mstang/clojurescript,mstang/clojurescript