Fix int/EMACS_INT in eval.c and indent.c, correct previous changes.

Fix int/EMACS_INT in eval.c and indent.c, correct previous changes.

 indent.c (Fcurrent_indentation, indented_beyond_p)
 (compute_motion): Use EMACS_INT for buffer position variables.
 lisp.h (indented_beyond_p): Adjust prototype.
 buffer.c (overlay_strings): Return EMACS_INT.
 buffer.h (overlay_strings): Adjust prototype.
 region-cache.c (pp_cache): Adjust format to arguments.
 eval.c <specpdl_size, lisp_eval_depth>: Declare EMACS_INT.
 (call_debugger): Use EMACS_INT for specpdl_size related variables.
 (verror): Use EMACS_INT for size of allocated buffer.