libsframe: add new dump_sframe_reloc

libsframe: add new dump_sframe_reloc

PR libsframe/32589 - function start address is zero in SFrame section dump

This new function dumps the contents of a relocated SFrame section in
human readable text.

Even after the section contents are relocated, there is need to fixup
the function start address, which is what sframe_fde_tbl_reloc_fixup ()
is about.  This function is libsframe internal only and is not exposed.

Some caution is necessary though in making sure this is done in a
version aware manner, when future versions of the SFrame format are
implemented.

libsframe/
        * libtool.version: Bump revision and age.  Use 1:1:1.
        * libsframe.ver: Add new API dump_sframe_reloc.
        * sframe-dump.c (dump_sframe):
        (dump_sframe_reloc): New definition.
        * sframe-impl.h (sframe_fde_tbl_reloc_fixup): New declaration.
        * sframe.c (sframe_fde_tbl_reloc_fixup): New definition.

include/
        * sframe-api.h (dump_sframe_reloc): New declaration.