maint: correct formatting style in a header

* src/find-mount-point.h: Move "*" to where it belongs.
Move "const", too.
* src/find-mount-point.c: Move "const" to conform.
* src/Makefile.am (sc_tight_scope): Allow `*'s before the function name.
Use perl's -l option and drop the \n after (and quotes around) $1.

src/Makefile.am

@@ -727,7 +727,8 @@ sc_tight_scope: $(bin_PROGRAMS)
 	( printf 'main\nusage\n_.*\n';					\
 	  grep -h -A1 '^extern .*[^;]$$' $$src				\
 	    | grep -vE '^(extern |--)' | sed 's/ .*//';			\
-	  perl -ne '/^extern (?:enum )?\S+ (\S*) \(/ and print "$$1\n"' $$hdr; \
+	  perl -lne '/^extern (?:enum )?\S+ \**(\S*) \(/ and print $$1' \
+		$$hdr;							\
 	) | $(ASSORT) -u | sed 's/^/^/;s/$$/$$/' > $$t;			\
 	nm -e *.$(OBJEXT)						\
 	    | sed -n 's/.* T //p'					\
@@ -736,7 +737,7 @@ sc_tight_scope: $(bin_PROGRAMS)
 	  { echo 'the above functions should have static scope' 1>&2;	\
 	    exit 1; } || : ;						\
 	( printf '^program_name$$\n';					\
-	  perl -ne '/^extern .*?\**(\w+);/ and print "^$$1\$$\n"'	\
+	  perl -lne '/^extern .*?\**(\w+);/ and print "^$$1\$$"'	\
 	    $$hdr *.h ) | $(ASSORT) -u > $$t;				\
 	nm -e *.$(OBJEXT)						\
 	    | sed -n 's/.* [BD] //p'					\

src/find-mount-point.c

@@ -29,11 +29,11 @@
    Give a diagnostic and return NULL if unable to determine the mount point.
    Exit if unable to restore current working directory.  */
 extern char *
-find_mount_point (const char *file, const struct stat *file_stat)
+find_mount_point (char const *file, struct stat const *file_stat)
 {
   struct saved_cwd cwd;
   struct stat last_stat;
-  char *mp = NULL;		/* The malloced mount point.  */
+  char *mp = NULL;		/* The malloc'd mount point.  */
 
   if (save_cwd (&cwd) != 0)
     {

src/find-mount-point.h

@@ -14,4 +14,4 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-extern char* find_mount_point (const char *, const struct stat *);
+extern char *find_mount_point (char const *, struct stat const *);