build odbc_config for host so drivers may use it to figure out build
details, patch odbc_config to return target specific values from
unixodbc_conf.h.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This allows ODBC drivers to create odbcinst.ini-snippets in
/etc/odbcinst.ini.d/ which will be assembled into
/tmp/etc/odbcinst.ini. /etc/odbcinst.ini is provided as a symlink
pointing to /tmp/etc/odbcinst.ini
Hence the unixODBC-provided PostgreSQL driver was also given an
odbcinst.ini.d snippet.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>