tal/str: add tal_append_fmt() and tal_append_vfmt() helpers.
[ccan] / README
2012-11-11 Rusty RussellREADME: update.
2008-06-02 Rusty RussellMove modules to ccan/ tools to tools/
2007-12-20 Rusty RussellInclude all the tools under ccan_tools dir, hacked...