.vimrc: Reload also .gvimrc if gui_running
.vimrc: Map <Space>g. to open ~/.gvimrc if gui_running
.gvimrc: Delete unnecessary comments
.gvimrc: Set guioptions
.gvimrc: Inhibit errorbells and visualbell
Merge branch 'gvim_initial_setting'
.gitconfig: Remove "-r" option for pager