soup-cache.c: do not cache multipart/x-mixed-replace content
soup-cache.c: do not cache multipart/x-mixed-replace content

That MIME type is normally used to stream video from webcams. Makes no sense to
cache those resources as they are always changing.

https://bugzilla.gnome.org/show_bug.cgi?id=642028

fanc999/libsoup,fanc999/libsoup,fanc999/libsoup,jwendell/libsoup,jwendell/libsoup,Distrotech/libsoup,ahmedammar/platform_external_gst_libsoup,Distrotech/libsoup,ahmedammar/platform_external_gst_libsoup,jwendell/libsoup,Distrotech/libsoup,Distrotech/libsoup,ahmedammar/platform_external_gst_libsoup,jwendell/libsoup,jwendell/libsoup,Distrotech/libsoup,fanc999/libsoup,fanc999/libsoup