libsepol: Rename kernel_to_common.c stack functions

Want to make use of selinux_sid_to_str[] and xen_sid_to_str[] from
kernel_to_common.h in module_to_cil.c, but stack functions with the
same names exist in module_to_cil.c and kernel_to_common.c (with
the function prototypes in kernel_to_common.h).

Since the stack functions in kernel_to_common.c are less general and
only work with strings, rename those functions from stack_* to
strs_stack_*.

Signed-off-by: James Carter <jwcart2@tycho.nsa.gov>
4 files changed