Actually delay for LOLCOMMITS_DELAY seconds, not 25ths of a second

On Linux lolcommits uses mplayer to capture. The capture_linux lib attempts to honour whatever is passed as a delay by either the -w or --delay command line options, or via the LOLCOMMITS_DELAY environment variable. 

However currently it's passed as-is to mplayer which delays by a number of frames, not seconds. This means that passing -w 2 results in a 2 frame delay (2 25ths of a second), not 2 second delay. 

The attached PR contains two commits:
* The first multiplies -w, --delay or LOLCOMMITS_DELAY value by 25 before passing to mplayer
* The second sets the default delay to 1 second (25 frames)

![b378043bbc6](https://f.cloud.github.com/assets/1097338/960834/32e16e90-04c2-11e3-9d71-f2e8d5bd6670.jpg)