DIZ enhancements: Read/use SAUCE data, support ANSI, increase max 1->4K
Inspired by Blocktronics (and other ANSI art group) packs' FILE_ID.DIZ/ANS files: * Support (and prioritize) FILE_ID.ANS * Convert ANSI color/attribute sequences in DIZ files to Ctrl-A equivalent (uses SAUCE width and ICE color, if specified) * Don't treat DIZ as a series of lines, they're not always nowadays. * New putmsg() mode: P_INDENT to print files indented by current column * Display full (up to 64-char) filenames in lists when using 132+ column terminal. * Use the Author, Group, and Title fields from the SAUCE if present/non-blank * 2 new text.dat strings: 301 (FiAuthor) and 302 (FiGroup) * Also fix bug with repeated Cost header field on bulk-uploaded files. I know this'll break the *nix build (sauce.c dependency), but I'll fix that next.