Manpages of src:syslinux in Debian stretch-backports

• extlinux(1)
• gethostip(1)
• isohybrid(1)
• isohybrid.pl(1)
• lss16toppm(1)
• md5pass(1)
• memdiskfind(1)
• mkdiskimage(1)
• ppmtolss16(1)
• pxelinux-options(1)
• sha1pass(1)
• syslinux(1)
• syslinux2ansi(1)