ext/soup/gstsouphttpsrc.*: Do not try to unpause I/O in the "queued" state.

ext/soup/gstsouphttpsrc.*: Do not try to unpause I/O in the "queued" state.

Original commit message from CVS:
Patch by: Wouter Cloetens <wouter at mind dot be>
* ext/soup/gstsouphttpsrc.c: (_do_init),
(gst_souphttp_src_class_init), (gst_souphttp_src_init),
(gst_souphttp_src_dispose), (gst_souphttp_src_set_property),
(gst_souphttp_src_get_property), (unicodify),
(gst_souphttp_src_unicodify), (gst_souphttp_src_create),
(gst_souphttp_src_start), (gst_souphttp_src_stop),
(gst_souphttp_src_unlock), (gst_souphttp_src_unlock_stop),
(gst_souphttp_src_get_size), (gst_souphttp_src_is_seekable),
(soup_got_headers), (soup_got_body), (soup_finished),
(soup_got_chunk), (soup_response), (soup_parse_status),
(gst_souphttp_src_uri_get_type),
(gst_souphttp_src_uri_get_protocols),
(gst_souphttp_src_uri_get_uri), (gst_souphttp_src_uri_set_uri),
(gst_souphttp_src_uri_handler_init):
* ext/soup/gstsouphttpsrc.h:
Do not try to unpause I/O in the "queued" state.
Reorganise a bunch of things and cleanups.
Uses G_GUINT64_FORMAT instead of hard-coding %llu.
See #502335.