bash: make dependency from ld.lib.so explicit

This patch is a workaround for the apparent problem that noux
applications, which perform execve, implicitly use functionality from
the dynamic linker, not explicitly via the libc. If the binary lacks the
dependency information, noux will fail on the execve attempt. The latter
is the case when the noux package is built as a depot archive where
library dependencies are not traversed over multiple levels.

repos/ports/recipes/src/bash/used_apis

@@ -1,3 +1,4 @@
+base
 libc
 noux
 posix

repos/ports/src/noux-pkg/bash/target.mk

@@ -11,4 +11,6 @@ CFLAGS += -DNO_MAIN_ENV_ARG=1
 # Prevent interactions with nonexisting tty driver
 CFLAGS += -DNO_TTY_DRIVER
 
+LIBS += ld
+
 include $(call select_from_repositories,mk/noux.mk)