libsysprof: add debuginfod symbolizer

This is based on a debuginfod_client provided by Barnabás Pőcze in !73.
It extends it to use the new task infrastructure to elevate the download
process to the user while loading a capture file.

src/libsysprof/meson.build

@@ -153,6 +153,13 @@ libsysprof_private_sources = [
   'timsort/gtktimsort.c',
 ]
 
+if debuginfod_dep.found() and get_option('debuginfod').enabled()
+  libsysprof_private_sources += [
+    'sysprof-debuginfod-symbolizer.c',
+    'sysprof-debuginfod-task.c'
+  ]
+endif
+
 if polkit_dep.found()
   libsysprof_private_sources += ['sysprof-polkit.c']
 endif
@@ -192,6 +199,7 @@ libsysprof_deps = [
 
   libsystemd_dep,
   polkit_dep,
+  debuginfod_dep,
 
   libeggbitset_static_dep,
   libelfparser_static_dep,