Manpages of velvet-long in Debian experimental

• velvetg_127_long(1)
• velvetg_63(1)
• velvetg_63_long(1)
• velvetg_long(1)
• velveth_127_long(1)
• velveth_63(1)
• velveth_63_long(1)
• velveth_long(1)