Function: _def_datadir
Class: default
Section: default
C-Name: sd_datadir
Prototype:
Help:
Doc: the name of directory containing the optional data files. For now,
 this includes the \kbd{elldata}, \kbd{galdata}, \kbd{galpol}, \kbd{seadata}
 packages.

 The default value is \kbd{/usr/local/share/pari}, or the override specified
 via \kbd{Configure --datadir=}.
