Personal DWM patches, diffed against stock DWM.

• gapsbetween: Like uselessgap but only between tiled windows.
• autostartlite: Specify an autostart script directly in config.h. Kinda stupid since it bloats the binary.
• ICSfocusline: Draws an ICS-like focus indicator on the root window, vertically. Needs some sort of gap between windows and may conflict with borders.
• centertags: Custom bar layout, puts tags on center.
• centerstatus: Essentially the same, but with the status text on center.
• toppadding: Adds a gap between the bar and tiled windows.
• togglelayout: Setting a layout twice will toggle it back to the previous one.
• custom: Personal setup.