Refactoring and cleanup code

Linum-mode is disabled for default (can be activated with F6 key), and improves the handling of large files.

init.el

@@ -7,9 +7,8 @@
 ;; Without this comment emacs25 adds (package-initialize) here
 ;; (package-initialize)
 
-(let* ((minver "24.4"))
-  (when (version< emacs-version minver)
-    (error "Emacs v%s or higher is required" minver)))
+;;; Time Mark
+(setq emacs-load-start-time (current-time))
 
 ;;; Welcome message
 (setq-default initial-scratch-message
@@ -18,41 +17,6 @@
 ;;; Modules directory
 (push (concat user-emacs-directory "modules") load-path)
 
-;;; Raise garbage collection threshold after init
-(defvar best-gc-cons-threshold
-  4000000
-  "Best default gc threshold value.  Should NOT be too big!")
-
-;; don't GC during startup to save time
-(setq gc-cons-threshold most-positive-fixnum)
-
-(setq emacs-load-start-time (current-time))
-
-;;----------------------------------------------------------------------------
-;; Which functionality to enable (use t or nil for true and false)
-;;----------------------------------------------------------------------------
-(setq *is-a-mac* (eq system-type 'darwin))
-(setq *win64* (eq system-type 'windows-nt))
-(setq *cygwin* (eq system-type 'cygwin) )
-(setq *linux* (or (eq system-type 'gnu/linux) (eq system-type 'linux)) )
-(setq *unix* (or *linux* (eq system-type 'usg-unix-v) (eq system-type 'berkeley-unix)) )
-(setq *emacs24* (>= emacs-major-version 24))
-(setq *emacs25* (>= emacs-major-version 25))
-(setq *emacs26* (>= emacs-major-version 26))
-(setq *no-memory* (cond
-                   (*is-a-mac*
-                    (< (string-to-number (nth 1 (split-string (shell-command-to-string "sysctl hw.physmem")))) 4000000000))
-                   (*linux* nil)
-                   (t nil)))
-
-;; @see https://www.reddit.com/r/emacs/comments/55ork0/is_emacs_251_noticeably_slower_than_245_on_windows/
-;; Emacs 25 does gc too frequently
-(when *emacs25*
-  ;; (setq garbage-collection-messages t) ; for debug
-  (setq best-gc-cons-threshold (* 64 1024 1024))
-  (setq gc-cons-percentage 0.5)
-(run-with-idle-timer 5 t #'garbage-collect))
-
 ;;;------------------------------
 ;;; Features
 ;;;------------------------------
@@ -74,7 +38,7 @@
   ;; Utils
   (require 'init-utils)
   ;; GUI
-  (require 'init-nlinum)
+  (require 'init-linum)
   (require 'init-gui)
   (require 'init-editing-utils)
   (require 'init-diminish)
@@ -127,8 +91,7 @@
 (when (file-exists-p custom-file)
   (load settings-file))
 
-(setq gc-cons-threshold best-gc-cons-threshold)
-
+;; Time Output
 (when window-system
   (let ((elapsed (float-time (time-subtract (current-time)
                                             emacs-load-start-time))))