style: move pkgdatadir to files.*

Let's move it to a more logical place.

* src/output.h, src/output.c (pkgdatadir): Move to...
* src/files.h, src/files.c: here.

src/files.c

@@ -21,11 +21,13 @@
 #include <config.h>
 #include "system.h"
 
+#include <configmake.h> /* PKGDATADIR */
 #include <error.h>
 #include <dirname.h>
 #include <get-errno.h>
 #include <quote.h>
 #include <quotearg.h>
+#include <relocatable.h> /* relocate2 */
 #include <stdio-safer.h>
 #include <xstrndup.h>
 
@@ -404,6 +406,21 @@ unlink_generated_sources (void)
       unlink (generated_files[i].name);
 }
 
+/* Memory allocated by relocate2, to free.  */
+static char *relocate_buffer = NULL;
+
+char const *
+pkgdatadir (void)
+{
+  if (relocate_buffer)
+    return relocate_buffer;
+  else
+    {
+      char const *cp = getenv ("BISON_PKGDATADIR");
+      return cp ? cp : relocate2 (PKGDATADIR, &relocate_buffer);
+    }
+}
+
 void
 output_file_names_free (void)
 {
@@ -417,4 +434,5 @@ output_file_names_free (void)
   for (int i = 0; i < generated_files_size; i++)
     free (generated_files[i].name);
   free (generated_files);
+  free (relocate_buffer);
 }

src/files.h

@@ -64,6 +64,9 @@ extern uniqstr current_file;
 /* The computed base for output file names.  */
 extern char *all_but_ext;
 
+/* Where our data files are installed.  */
+char const *pkgdatadir (void);
+
 void compute_output_file_names (void);
 void output_file_names_free (void);
 

src/output.c

@@ -21,12 +21,10 @@
 #include <config.h>
 #include "system.h"
 
-#include <configmake.h>
 #include <filename.h> /* IS_PATH_WITH_DIR */
 #include <get-errno.h>
 #include <path-join.h>
 #include <quotearg.h>
-#include <relocatable.h> /* relocate2 */
 #include <spawn-pipe.h>
 #include <timevar.h>
 #include <wait-process.h>
@@ -46,9 +44,6 @@
 
 static struct obstack format_obstack;
 
-/* Memory allocated by relocate2, to free.  */
-static char *relocate_buffer = NULL;
-
 
 /*-------------------------------------------------------------------.
 | Create a function NAME which associates to the muscle NAME the     |
@@ -736,17 +731,4 @@ output (void)
     unlink_generated_sources ();
 
   obstack_free (&format_obstack, NULL);
-  free (relocate_buffer);
-}
-
-char const *
-pkgdatadir (void)
-{
-  if (relocate_buffer)
-    return relocate_buffer;
-  else
-    {
-      char const *cp = getenv ("BISON_PKGDATADIR");
-      return cp ? cp : relocate2 (PKGDATADIR, &relocate_buffer);
-    }
 }

src/output.h

@@ -24,7 +24,4 @@
 /* Output the parsing tables and the parser code to FTABLE.  */
 void output (void);
 
-/* Where our data files are installed.  */
-char const *pkgdatadir (void);
-
 #endif /* !OUTPUT_H_ */