tweaks: when allow_tabs is FALSE, allow_files is irrelevant

In that case setting the latter to TRUE is misleading.  So don't do that.

src/browser.c

@@ -672,7 +672,7 @@ int filesearch_init(void)
     /* This is now one simple call.  It just does a lot. */
     input = do_prompt(FALSE,
 #ifndef DISABLE_TABCOMP
-		TRUE,
+		FALSE,
 #endif
 		MWHEREISFILE, NULL,
 #ifndef DISABLE_HISTORIES

src/search.c

@@ -149,7 +149,7 @@ int search_init(bool replacing, bool use_answer)
     /* This is now one simple call.  It just does a lot. */
     i = do_prompt(FALSE,
 #ifndef DISABLE_TABCOMP
-		TRUE,
+		FALSE,
 #endif
 		replacing ? MREPLACE : MWHEREIS, backupstring,
 #ifndef DISABLE_HISTORIES
@@ -787,7 +787,7 @@ void do_replace(void)
 
     i = do_prompt(FALSE,
 #ifndef DISABLE_TABCOMP
-		TRUE,
+		FALSE,
 #endif
 		MREPLACEWITH, NULL,
 #ifndef DISABLE_HISTORIES
@@ -856,7 +856,7 @@ void do_gotolinecolumn(ssize_t line, ssize_t column, bool use_answer,
 	/* Ask for the line and column. */
 	int i = do_prompt(FALSE,
 #ifndef DISABLE_TABCOMP
-		TRUE,
+		FALSE,
 #endif
 		MGOTOLINE, use_answer ? answer : NULL,
 #ifndef DISABLE_HISTORIES

src/text.c

@@ -2666,7 +2666,7 @@ bool do_int_spell_fix(const char *word)
 	/* Let the user supply a correctly spelled alternative. */
 	proceed = (do_prompt(FALSE,
 #ifndef DISABLE_TABCOMP
-				TRUE,
+				FALSE,
 #endif
 				MSPELL, word,
 #ifndef DISABLE_HISTORIES