allocator: add gst_allocation_params_new()
This permits creating GstAllocationParams instances on the heap, which is useful for language bindings that can handle GBoxed types. E.g., this will permit fixing GNOME/vala#1159.
Closes #683 (closed).
This permits creating GstAllocationParams instances on the heap, which is useful for language bindings that can handle GBoxed types. E.g., this will permit fixing GNOME/vala#1159.
Closes #683 (closed).