* lisp/vc/emerge.el (emerge-eval-in-buffer): Remove, and replace all uses with with-current-buffer. (diff, template): Give dynamic local variables a prefix. (emerge-line-numbers): Rename local `diff' to emerge-line-diff. (emerge-line-number-in-buf): Update for above name change. (emerge-combine-versions-internal): Rename local `template' to emerge-combine-template. (emerge-combine-versions-edit): Update for above name change.