patch 8.2.0674: some source files are too big

Problem:    Some source files are too big.
Solution:   Move text formatting functions to a new file. (Yegappan
            Lakshmanan, closes #6021)
diff --git a/src/Makefile b/src/Makefile
index 8a12cb8..6c7ef85 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1680,6 +1680,7 @@
 	term.c \
 	terminal.c \
 	testing.c \
+	textformat.c \
 	textobject.c \
 	textprop.c \
 	time.c \
@@ -1823,6 +1824,7 @@
 	objects/term.o \
 	objects/terminal.o \
 	objects/testing.o \
+	objects/textformat.o \
 	objects/textobject.o \
 	objects/textprop.o \
 	objects/time.o \
@@ -1998,6 +2000,7 @@
 	terminal.pro \
 	termlib.pro \
 	testing.pro \
+	textformat.pro \
 	textobject.pro \
 	textprop.pro \
 	time.pro \
@@ -3479,6 +3482,9 @@
 objects/testing.o: testing.c
 	$(CCC) -o $@ testing.c
 
+objects/textformat.o: textformat.c
+	$(CCC) -o $@ textformat.c
+
 objects/textobject.o: textobject.c
 	$(CCC) -o $@ textobject.c
 
@@ -4073,6 +4079,10 @@
  auto/osdef.h ascii.h keymap.h term.h macros.h option.h beval.h \
  proto/gui_beval.pro structs.h regexp.h gui.h alloc.h ex_cmds.h spell.h \
  proto.h globals.h
+objects/textformat.o: textformat.c vim.h protodef.h auto/config.h feature.h os_unix.h \
+ auto/osdef.h ascii.h keymap.h term.h macros.h option.h beval.h \
+ proto/gui_beval.pro structs.h regexp.h gui.h alloc.h ex_cmds.h spell.h \
+ proto.h globals.h
 objects/textobject.o: textobject.c vim.h protodef.h auto/config.h feature.h os_unix.h \
  auto/osdef.h ascii.h keymap.h term.h macros.h option.h beval.h \
  proto/gui_beval.pro structs.h regexp.h gui.h alloc.h ex_cmds.h spell.h \