Blender file selector support for setting multiple selected files/dirs which operators can use.

This allows the sequencers Add-Image strip to work like it does in 2.4x.

- as well as setting the "filename" operator property, operators can have collections called "files" and "dirs" which are set when available.
- RNA_OperatorFileListElement as new collection type, its a bit redundant since each item only has a "name" property but its needed since we don't have a string array type.
- the file selector now prints operators it runs.

Tested with python, adding a list of images works to the sequencer works.
bpy.ops.SEQUENCER_OT_image_strip_add(name="MyImages", start_frame=54, channel=2, filename="/somedir/", replace_sel=True, files=[{"name":"test1.png"}, {"name":"test2.png"}])

1 files changed, 0 insertions, 1 deletions

diff --git a/source/blender/makesrna/intern/rna_access.c b/source/blender/makesrna/intern/rna_access.c
index 91b46e8e3d7..e762d1626f5 100644
--- a/source/blender/makesrna/intern/rna_access.c
+++ b/source/blender/makesrna/intern/rna_access.c
@@ -2214,7 +2214,6 @@ char *RNA_pointer_as_string(PointerRNA *ptr)
 		cstring = RNA_property_as_string(&iter.ptr, prop);
 		BLI_dynstr_appendf(dynstr, "\"%s\":%s", propname, cstring);
 		MEM_freeN(cstring);
-		first_time= 0;
 	}
 
 	RNA_property_collection_end(&iter);