- Eager-load all core autoloaded libraries if autoloads file isn't
present.
- Renames functions to be more descriptive of their true purpose:
- doom-initialize-autoloads -> doom-load-autoloads-file
- doom-load-env-vars -> doom-load-envvars-file
- Use doom-module-p instead of featurep! for backend use (the latter is
mainly syntax sugar for module use, and evaluates at compile/expansion
time, which may cause hash-table-p errors early in the startup
process).
- Reorder plist library to prevent load order race condition with the
functions using the macros that haven't been defined yet.
