Cleanup: Rename original curve object type enum

This commit renames enums related the "Curve" object type and ID type
to add `_LEGACY` to the end. The idea is to make our aspirations clearer
in the code and to avoid ambiguities between `CURVE` and `CURVES`.

Ref T95355

To summarize for the record, the plans are:
- In the short/medium term, replace the `Curve` object data type with
 `Curves`
- In the longer term (no immediate plans), use a proper data block for
  3D text and surfaces.

Differential Revision: https://developer.blender.org/D14114

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/blenkernel/intern/main.c b/source/blender/blenkernel/intern/main.c
index b25432780ed..03e03dacfbc 100644
--- a/source/blender/blenkernel/intern/main.c
+++ b/source/blender/blenkernel/intern/main.c
@@ -563,7 +563,7 @@ ListBase *which_libbase(Main *bmain, short type)
       return &(bmain->objects);
     case ID_ME:
       return &(bmain->meshes);
-    case ID_CU:
+    case ID_CU_LEGACY:
       return &(bmain->curves);
     case ID_MB:
       return &(bmain->metaballs);
@@ -670,7 +670,7 @@ int set_listbasepointers(Main *bmain, ListBase *lb[/*INDEX_ID_MAX*/])
 
   lb[INDEX_ID_CF] = &(bmain->cachefiles);
   lb[INDEX_ID_ME] = &(bmain->meshes);
-  lb[INDEX_ID_CU] = &(bmain->curves);
+  lb[INDEX_ID_CU_LEGACY] = &(bmain->curves);
   lb[INDEX_ID_MB] = &(bmain->metaballs);
   lb[INDEX_ID_CV] = &(bmain->hair_curves);
   lb[INDEX_ID_PT] = &(bmain->pointclouds);