Move config files to XDG-compatible path

Move config files to XDG-compatible path: `$HOME/.config/emacs`.

.config/emacs/config/base.el

@@ -0,0 +1,88 @@
+;; use UTF-8 for file name encoding
+(setq file-name-coding-system 'utf-8)
+(prefer-coding-system 'utf-8)
+
+;; enable some commands disabled by default
+(put 'narrow-to-region 'disabled nil)
+(put 'upcase-region 'disabled nil)
+(put 'downcase-region 'disabled nil)
+
+;; no fancy graphic stuff, you don't want to use the mouse anyway, do
+;; you?
+(if (fboundp 'scroll-bar-mode) (scroll-bar-mode -1))
+(if (fboundp 'tool-bar-mode) (tool-bar-mode -1))
+(if (fboundp 'menu-bar-mode) (menu-bar-mode -1))
+(setq use-dialog-box nil)
+
+;; add key sequences
+(global-set-key "\C-c\l" 'goto-line)
+
+;; syntax coloring
+(global-font-lock-mode t)
+
+;; show end of fill-column length
+(global-display-fill-column-indicator-mode t)
+
+;; paren matching
+(show-paren-mode t)
+
+;; display of current function (which-function-mode)
+(which-function-mode 1)
+
+;; VC is mostly useless for modern DVCSs
+(setq vc-handled-backends nil)
+
+;; configure the browser
+(setq browse-url-browser-function 'browse-url-generic
+      browse-url-generic-program "firefox")
+
+;; use space instead of tabs
+(setq-default indent-tabs-mode nil)
+
+;; yank at cursor not mouse pointer
+(setq mouse-yank-at-point t)
+
+;; make the screen go down with one line & mouse wheel support
+(setq scroll-conservatively 1000)
+(mouse-wheel-mode t)
+
+;; clipboard yanking is possible with middle mouse button now
+(setq x-select-enable-clipboard t
+      x-select-enable-primary t)
+
+;; enhanced buffer switching with shift + arrows
+(windmove-default-keybindings)
+
+;; resize cursor to character
+(setq x-stretch-cursor t)
+
+;; set tab width to 4 whitespaces
+(setq tab-width 4)
+(setq-default cperl-indent-level tab-width)
+
+;; More history
+(setq-default history-length 1000)
+
+;; delete trailing whitespaces before saving
+(add-hook 'before-save-hook 'delete-trailing-whitespace)
+
+;; add newlines at eof
+(setq require-final-newline t)
+
+;; enable number-modes
+(setq line-number-mode t)
+(setq column-number-mode t)
+
+;; show paren mode
+(setq show-paren-mode t)
+
+;; no am/pm in timestamps
+(setq display-time-24hr-format t)
+
+;; configure theme
+(custom-set-variables
+ '(custom-enabled-themes (quote (tango-dark))))
+
+;; configure authinfo file
+(setq auth-sources
+      '((:source "~/.authinfo.gpg")))