patch 8.2.4993: smart/C/lisp indenting is optional

Problem:    smart/C/lisp indenting is optional, which makes the code more
            complex, while it only reduces the executable size a bit.
Solution:   Graduate FEAT_CINDENT, FEAT_SMARTINDENT and FEAT_LISP.
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 8668233..b435919 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1621,8 +1621,6 @@
 				   *'cindent'* *'cin'* *'nocindent'* *'nocin'*
 'cindent' 'cin'		boolean	(default off)
 			local to buffer
-			{not available when compiled without the |+cindent|
-			feature}
 	Enables automatic C program indenting.  See 'cinkeys' to set the keys
 	that trigger reindenting in insert mode and 'cinoptions' to set your
 	preferred indent style.
@@ -1639,8 +1637,6 @@
 							*'cinkeys'* *'cink'*
 'cinkeys' 'cink'	string	(default "0{,0},0),0],:,0#,!^F,o,O,e")
 			local to buffer
-			{not available when compiled without the |+cindent|
-			feature}
 	A list of keys that, when typed in Insert mode, cause reindenting of
 	the current line.  Only used if 'cindent' is on and 'indentexpr' is
 	empty.
@@ -1650,8 +1646,6 @@
 						*'cinoptions'* *'cino'*
 'cinoptions' 'cino'	string	(default "")
 			local to buffer
-			{not available when compiled without the |+cindent|
-			feature}
 	The 'cinoptions' affect the way 'cindent' reindents lines in a C
 	program.  See |cinoptions-values| for the values of this option, and
 	|C-indenting| for info on C indenting in general.
@@ -1660,8 +1654,6 @@
 						*'cinwords'* *'cinw'*
 'cinwords' 'cinw'	string	(default "if,else,while,do,for,switch")
 			local to buffer
-			{not available when compiled without both the
-			|+cindent| and the |+smartindent| features}
 	These keywords start an extra indent in the next line when
 	'smartindent' or 'cindent' is set.  For 'cindent' this is only done at
 	an appropriate place (inside {}).
@@ -1672,8 +1664,6 @@
 						*'cinscopedecls'* *'cinsd'*
 'cinscopedecls' 'cinsd'	string	(default "public,protected,private")
 			local to buffer
-			{not available when compiled without the |+cindent|
-			feature}
 	Keywords that are interpreted as a C++ scope declaration by |cino-g|.
 	Useful e.g. for working with the Qt framework that defines additional
 	scope declarations "signals", "public slots" and "private slots": >
@@ -4578,8 +4568,8 @@
 						*'indentexpr'* *'inde'*
 'indentexpr' 'inde'	string	(default "")
 			local to buffer
-			{not available when compiled without the |+cindent|
-			or |+eval| features}
+			{not available when compiled without the |+eval|
+			feature}
 	Expression which is evaluated to obtain the proper indent for a line.
 	It is used when a new line is created, for the |=| operator and
 	in Insert mode as specified with the 'indentkeys' option.
@@ -4624,8 +4614,6 @@
 						*'indentkeys'* *'indk'*
 'indentkeys' 'indk'	string	(default "0{,0},0),0],:,0#,!^F,o,O,e")
 			local to buffer
-			{not available when compiled without the |+cindent|
-			feature}
 	A list of keys that, when typed in Insert mode, cause reindenting of
 	the current line.  Only happens if 'indentexpr' isn't empty.
 	The format is identical to 'cinkeys', see |indentkeys-format|.
@@ -5013,8 +5001,6 @@
 						*'lisp'* *'nolisp'*
 'lisp'			boolean	(default off)
 			local to buffer
-			{not available when compiled without the |+lispindent|
-			feature}
 	Lisp mode: When <Enter> is typed in insert mode set the indent for
 	the next line to Lisp standards (well, sort of).  Also happens with
 	"cc" or "S".  'autoindent' must also be on for this to work.  The 'p'
@@ -5028,8 +5014,6 @@
 						*'lispwords'* *'lw'*
 'lispwords' 'lw'	string	(default is very long)
 			global or local to buffer |global-local|
-			{not available when compiled without the |+lispindent|
-			feature}
 	Comma-separated list of words that influence the Lisp indenting.
 	|'lisp'|
 
@@ -7222,8 +7206,6 @@
 			     *'smartindent'* *'si'* *'nosmartindent'* *'nosi'*
 'smartindent' 'si'	boolean	(default off)
 			local to buffer
-			{not available when compiled without the
-			|+smartindent| feature}
 	Do smart autoindenting when starting a new line.  Works for C-like
 	programs, but can also be used for other languages.  'cindent' does
 	something like this, works better in most cases, but is more strict,