bin/emacs-do-gnus: do gnus for me
bin/emacs-update-packages: update emacs packages for me
etc/.Xmodmap: fix caps lock key
etc/.config/QtProject/qtcreator/externaltools/Edit_with_Emacs.xml: do emacs editing in qtcreator
etc/elpa.gitignore: only ignore .elc files

Signed-off-by: Bao Haojun <baohaojun@gmail.com>