(API Change) Remove pointers from all typedefs

Typedef pointers are unsafe.  If you do:
typedef struct bla *bla_t;
then you cannot use it as a constant, such as: const bla_t, because
that constant will be to the pointer itself rather than to the
underlying data.  I admit this was a fundamental mistake that must
be corrected.

All typedefs that were pointer types will now have their pointers
removed from the type itself, and the pointers will be used when they
are actually used as variables/parameters/returns instead.

This does not break ABI though, which is pretty nice.

libobs-d3d11/d3d11-indexbuffer.cpp

@@ -37,7 +37,7 @@ void gs_index_buffer::InitBuffer()
 		throw HRError("Failed to create buffer", hr);
 }
 
-gs_index_buffer::gs_index_buffer(gs_device_t device, enum gs_index_type type,
+gs_index_buffer::gs_index_buffer(gs_device_t *device, enum gs_index_type type,
 		void *indices, size_t num, uint32_t flags)
 	: device  (device),
 	  type    (type),