gst/tcp/: Ported over some sink elements.
gst/tcp/: Ported over some sink elements.

Original commit message from CVS:
* gst/tcp/Makefile.am:
* gst/tcp/gstmultifdsink.c: (gst_multifdsink_get_type),
(gst_multifdsink_base_init), (gst_multifdsink_class_init),
(gst_multifdsink_init), (gst_multifdsink_handle_client_write),
(gst_multifdsink_queue_buffer), (gst_multifdsink_render),
(gst_multifdsink_change_state):
* gst/tcp/gstmultifdsink.h:
* gst/tcp/gsttcp.c:
* gst/tcp/gsttcpclientsink.c: (gst_tcpclientsink_get_type),
(gst_tcpclientsink_base_init), (gst_tcpclientsink_class_init),
(gst_tcpclientsink_init), (gst_tcpclientsink_render),
(gst_tcpclientsink_set_property), (gst_tcpclientsink_get_property),
(gst_tcpclientsink_change_state):
* gst/tcp/gsttcpclientsink.h:
* gst/tcp/gsttcpclientsrc.c: (gst_tcpclientsrc_class_init),
(gst_tcpclientsrc_init_receive):
* gst/tcp/gsttcpplugin.c: (plugin_init):
* gst/tcp/gsttcpserversink.c: (gst_tcpserversink_class_init):
* gst/tcp/gsttcpserversink.h:
* gst/tcp/gsttcpserversrc.c: (gst_tcpserversrc_class_init):
* gst/tcp/gsttcpsink.c: (gst_tcpsink_get_type),
(gst_tcpsink_base_init), (gst_tcpsink_class_init),
(gst_tcpsink_setcaps), (gst_tcpsink_init), (gst_tcpsink_get_times),
(gst_tcpsink_render), (gst_tcpsink_set_property),
(gst_tcpsink_get_property):
* gst/tcp/gsttcpsink.h:
* gst/tcp/gsttcpsrc.c: (gst_tcpsrc_class_init), (gst_tcpsrc_get):
Ported over some sink elements.
Sources not ported yet as they require a PushSource base class.

Kurento/gst-plugins-good,stfl/gst-plugins-good,StreamUtils/gst-plugins-good,mrchapp/gst-plugins-good,offlinehacker/gst-plugins-good,jahrome/gst-plugins-good,freedesktop-unofficial-mirror/gstreamer-sdk__gst-plugins-good,ylatuya/gst-plugins-good,GrokImageCompression/gst-plugins-good,davibe/gst-plugins-good-1.0,pexip/gst-plugins-good,offlinehacker/gst-plugins-good,loshca/gst-plugins-good,Kurento/gst-plugins-good,jcaden/gst-plugins-good,ahmedammar/platform_external_gst_plugins_good,prajnashi/gst-plugins-good,rikaunite/gst-opera_gst-plugins-good,reynaldo-samsung/gst-plugins-good,jpakkane/gstreamer-plugins-good,lovebug356/gst-plugins-good,veo-labs/gst-plugins-good,StreamUtils/gst-plugins-good,roopar/gst-plugins-good,reynaldo-samsung/gst-plugins-good,jahrome/gst-plugins-good,jpakkane/gstreamer-plugins-good,cfoch/gst-plugins-good,prajnashi/gst-plugins-good,ndufresne/gst-plugins-good,freedesktop-unofficial-mirror/gstreamer-sdk__gst-plugins-good,GStreamer/gst-plugins-good,surround-io/gst-plugins-good,ijsf/OpenWebRTC-gst-plugins-good,alessandrod/gst-plugins-good,ted-n/gst-plugins-good,ariscop/gst-plugins-good,vatavuserban/gst-plugins-good,GStreamer/gst-plugins-good,vatavuserban/gst-plugins-good,an146/gst-plugins-good,zaheerm/gst-plugins-good,an146/gst-plugins-good,jhodapp/gst-plugins-good,rikaunite/gst-opera_gst-plugins-good,offlinehacker/gst-plugins-good,mrchapp/gst-plugins-good,Distrotech/gst-plugins-good,collects/gst-plugins-good,ahmedammar/platform_external_gst_plugins_good,freedesktop-unofficial-mirror/gstreamer__gst-plugins-good,surround-io/gst-plugins-good,loshca/gst-plugins-good,ted-n/gst-plugins-good,ijsf/OpenWebRTC-gst-plugins-good,knuesel/gst-plugins-good,strukturag/gst-plugins-good,ylatuya/gst-plugins-good,dgerlach/gst-plugins-good,sh0/gst-plugins-good,davibe/gst-plugins-good,rawoul/gst-plugins-good,shelsonjava/gst-plugins-good,ariscop/gst-plugins-good,loshca/gst-plugins-good,pexip/gst-plugins-good,froggatt/gst-plugins-good-m,roopar/gst-plugins-good,sebras/gst-plugins-good,jhodapp/gst-plugins-good,Kurento/gst-plugins-good,ylatuya/gst-plugins-good,Kurento/gst-plugins-good,matsu/gst-plugins-good,cablelabs/gst-plugins-good,wkatsak/gst-plugins-good,krad-radio/gstreamer-plugins-good-krad,greg80303/gst-plugins-good,froggatt/gst-plugins-good-m,BigBrother-International/gst-plugins-good,rawoul/gst-plugins-good,shelsonjava/gst-plugins-good,veo-labs/gst-plugins-good,chamois94/gst-plugins-good,davibe/gst-plugins-good-1.0,sh0/gst-plugins-good,strukturag/gst-plugins-good,krad-radio/gstreamer-plugins-good-krad,an146/gst-plugins-good,vatavuserban/gst-plugins-good,freedesktop-unofficial-mirror/gstreamer-sdk__gst-plugins-good,cablelabs/gst-plugins-good,ikonst/gst-plugins-good,ndufresne/gst-plugins-good,jcaden/gst-plugins-good,ariscop/gst-plugins-good,ted-n/gst-plugins-good,shelsonjava/gst-plugins-good,wkatsak/gst-plugins-good,cablelabs/gst-plugins-good,strukturag/gst-plugins-good,chamois94/gst-plugins-good,freedesktop-unofficial-mirror/gstreamer-sdk__gst-plugins-good,jhodapp/gst-plugins-good,luisbg/gst-plugins-good,ndufresne/gst-plugins-good,hizukiayaka/gst-plugins-good,jcaden/gst-plugins-good,pexip/gst-plugins-good,jcaden/gst-plugins-good,rikaunite/gst-opera_gst-plugins-good,jpakkane/gstreamer-plugins-good,Distrotech/gst-plugins-good,an146/gst-plugins-good,freedesktop-unofficial-mirror/gstreamer__gst-plugins-good,krieger-od/gst-plugins-good,greg80303/gst-plugins-good,Kurento/gst-plugins-good,alessandrod/gst-plugins-good,jhodapp/gst-plugins-good,StreamUtils/gst-plugins-good,hizukiayaka/gst-plugins-good,Lachann/gst-plugins-good,ariscop/gst-plugins-good,ikonst/gst-plugins-good,GStreamer/gst-plugins-good,greg80303/gst-plugins-good,jahrome/gst-plugins-good,krieger-od/gst-plugins-good,jpakkane/gstreamer-plugins-good,rawoul/gst-plugins-good,reynaldo-samsung/gst-plugins-good,Lachann/gst-plugins-good,veo-labs/gst-plugins-good,cfoch/gst-plugins-good,knuesel/gst-plugins-good,pexip/gst-plugins-good,knuesel/gst-plugins-good,freedesktop-unofficial-mirror/gstreamer__gst-plugins-good,loshca/gst-plugins-good,kittee/gst-plugins-good,stfl/gst-plugins-good,GStreamer/gst-plugins-good,hizukiayaka/gst-plugins-good,sebras/gst-plugins-good,froggatt/gst-plugins-good-m,sebras/gst-plugins-good,surround-io/gst-plugins-good,davibe/gst-plugins-good,ted-n/gst-plugins-good,vatavuserban/gst-plugins-good,sh0/gst-plugins-good,ijsf/OpenWebRTC-gst-plugins-good,GrokImageCompression/gst-plugins-good,rawoul/gst-plugins-good,ijsf/OpenWebRTC-gst-plugins-good,zaheerm/gst-plugins-good,dgerlach/gst-plugins-good,cfoch/gst-plugins-good,mrchapp/gst-plugins-good,BigBrother-International/gst-plugins-good,knuesel/gst-plugins-good,dgerlach/gst-plugins-good,davibe/gst-plugins-good-1.0,mrchapp/gst-plugins-good,strukturag/gst-plugins-good,lovebug356/gst-plugins-good,krieger-od/gst-plugins-good,wkatsak/gst-plugins-good,GrokImageCompression/gst-plugins-good,ahmedammar/platform_external_gst_plugins_good,kittee/gst-plugins-good,krieger-od/gst-plugins-good,Lachann/gst-plugins-good,matsu/gst-plugins-good,kittee/gst-plugins-good,Lachann/gst-plugins-good,ahmedammar/platform_external_gst_plugins_good,kittee/gst-plugins-good,Distrotech/gst-plugins-good,PPCDroid/external-gst-plugins-good,collects/gst-plugins-good,alessandrod/gst-plugins-good,ikonst/gst-plugins-good,sh0/gst-plugins-good,ikonst/gst-plugins-good,stfl/gst-plugins-good,roopar/gst-plugins-good,chamois94/gst-plugins-good,PPCDroid/external-gst-plugins-good,luisbg/gst-plugins-good,StreamUtils/gst-plugins-good,luisbg/gst-plugins-good,PPCDroid/external-gst-plugins-good,ndufresne/gst-plugins-good,luisbg/gst-plugins-good,froggatt/gst-plugins-good-m,greg80303/gst-plugins-good,sebras/gst-plugins-good,matsu/gst-plugins-good,chamois94/gst-plugins-good,reynaldo-samsung/gst-plugins-good,mrchapp/gst-plugins-good,davibe/gst-plugins-good-1.0,wkatsak/gst-plugins-good,hizukiayaka/gst-plugins-good,zaheerm/gst-plugins-good,davibe/gst-plugins-good,freedesktop-unofficial-mirror/gstreamer__gst-plugins-good,collects/gst-plugins-good,lovebug356/gst-plugins-good,cablelabs/gst-plugins-good,krad-radio/gstreamer-plugins-good-krad,cfoch/gst-plugins-good,veo-labs/gst-plugins-good,lovebug356/gst-plugins-good,collects/gst-plugins-good,stfl/gst-plugins-good,GrokImageCompression/gst-plugins-good,shelsonjava/gst-plugins-good,BigBrother-International/gst-plugins-good,matsu/gst-plugins-good,Distrotech/gst-plugins-good,alessandrod/gst-plugins-good,offlinehacker/gst-plugins-good,krad-radio/gstreamer-plugins-good-krad,BigBrother-International/gst-plugins-good,surround-io/gst-plugins-good,pexip/gst-plugins-good,ylatuya/gst-plugins-good,Distrotech/gst-plugins-good,zaheerm/gst-plugins-good,rikaunite/gst-opera_gst-plugins-good,jahrome/gst-plugins-good,prajnashi/gst-plugins-good