Move some dwarf functionality from ptrace to dwarf

Move ptrace-independent code from src/ptrace/_UPT_find_proc_info.c
to src/dwarf/{G,L}find_unwind_table.c. Name this moved function
dwarf_find_unwind_table().

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
7 files changed