tal: add tal_expand().
[ccan] / ccan / tal /
drwxr-xr-x   ..
lrwxrwxrwx 22 LICENSE -> ../../licenses/BSD-MIT
-rw-r--r-- 2684 _info
drwxr-xr-x - benchmark
drwxr-xr-x - path
drwxr-xr-x - str
-rw-r--r-- 21694 tal.c
-rw-r--r-- 12891 tal.h
drwxr-xr-x - test