Manpages of src:mgp in Debian testing

• mgp(1)
• mgp(1x)
• mgp2ps(1)
• mgp2ps(1x)
• mgpembed(1)
• mgpembed(1x)
• mgpnet(1)
• mgpnet(1x)
• xwintoppm(1)
• xwintoppm(1x)