berkeleydb: fix build of shared libraries

009d8fceab4 and 0a5e5534cbf8 moved the --enable-static configure flag
from package files to the default _CONFIGURE_CMDS in
package/Makefile.autotools.in.
This broke Autotools packages that override _CONFIGURE_CMDS.

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/berkeleydb/berkeleydb.mk

@@ -38,6 +38,7 @@ define BERKELEYDB_CONFIGURE_CMDS
 		--disable-rpc \
 		--disable-tcl \
 		--disable-compat185 \
+		$(SHARED_STATIC_LIBS_OPTS) \
 		--with-pic \
 	)
 	$(SED) 's/\.lo/.o/g' $(@D)/build_unix/Makefile