patch 8.2.0660: the search.c file is a bit big

Problem:    The search.c file is a bit big.
Solution:   Split off the text object code to a separate file. (Yegappan
            Lakshmanan, closes #6007)
diff --git a/src/Make_mvc.mak b/src/Make_mvc.mak
index ebc059f..c873ca0 100644
--- a/src/Make_mvc.mak
+++ b/src/Make_mvc.mak
@@ -806,6 +806,7 @@
 	$(OUTDIR)\tag.obj \
 	$(OUTDIR)\term.obj \
 	$(OUTDIR)\testing.obj \
+	$(OUTDIR)\textobject.obj \
 	$(OUTDIR)\textprop.obj \
 	$(OUTDIR)\time.obj \
 	$(OUTDIR)\ui.obj \
@@ -1744,6 +1745,8 @@
 
 $(OUTDIR)/term.obj:	$(OUTDIR) testing.c  $(INCL)
 
+$(OUTDIR)/textobject.obj:	$(OUTDIR) textobject.c  $(INCL)
+
 $(OUTDIR)/textprop.obj:	$(OUTDIR) textprop.c  $(INCL)
 
 $(OUTDIR)/time.obj:	$(OUTDIR) time.c  $(INCL)
@@ -1942,6 +1945,7 @@
 	proto/tag.pro \
 	proto/term.pro \
 	proto/testing.pro \
+	proto/textobject.pro \
 	proto/textprop.pro \
 	proto/time.pro \
 	proto/ui.pro \