dpkg: Make enum conffopt declaration private by moving to configure.c

There's no other users, and no public function expecting such argument,
so just hide this implementation detail where it belongs.

src/configure.c

@@ -57,6 +57,25 @@
 #include "filesdb.h"
 #include "main.h"
 
+enum conffopt {
+	cfof_prompt		= 00001,
+	cfof_keep		= 00002,
+	cfof_install		= 00004,
+	cfof_backup		= 00100,
+	cfof_newconff		= 00200,
+	cfof_isnew		= 00400,
+	cfof_isold		= 01000,
+	cfof_userrmd		= 02000,
+
+	cfo_keep		= cfof_keep,
+	cfo_identical		= cfof_keep,
+	cfo_install		= cfof_install,
+	cfo_newconff		= cfof_newconff | cfof_install,
+	cfo_prompt		= cfof_prompt,
+	cfo_prompt_keep		= cfof_prompt | cfof_keep,
+	cfo_prompt_install	= cfof_prompt | cfof_install,
+};
+
 static int conffoptcells[2][2] = {
 	/* Distro !edited. */	/* Distro edited. */
 	{ cfo_keep,		cfo_install },		/* User !edited. */

src/main.h

@@ -106,24 +106,6 @@ enum action {
 	act_forgetold,
 };
 
-enum conffopt {
-  cfof_prompt        =     001,
-  cfof_keep          =     002,
-  cfof_install       =     004,
-  cfof_backup        =   00100,
-  cfof_newconff      =   00200,
-  cfof_isnew         =   00400,
-  cfof_isold         =   01000,
-  cfof_userrmd       =   02000,
-  cfo_keep           =   cfof_keep,
-  cfo_prompt_keep    =   cfof_keep | cfof_prompt,
-  cfo_prompt         =               cfof_prompt,
-  cfo_prompt_install =               cfof_prompt | cfof_install,
-  cfo_install        =                             cfof_install,
-  cfo_newconff       =                             cfof_install | cfof_newconff,
-  cfo_identical      =   cfof_keep
-};
-
 extern const char *const statusstrings[];
 
 extern int f_pending, f_recursive, f_alsoselect, f_skipsame, f_noact;