Ticket #1424: install some files into /usr/share/mc instead of /etc/mc.

RPMLint shows the following warnings:
mc.i586: W: conffile-without-noreplace-flag /etc/mc/Syntax
mc.i586: W: conffile-without-noreplace-flag /etc/mc/mc.lib
mc.i586: W: conffile-without-noreplace-flag /etc/mc/mc.charsets

First step: install Syntax into /usr/share/mc instead of /etc/mc.
This also fixes the impossibility of editing of system-wide Syntax file
in mcedit under root (menu Options->Syntax file->System Wide).

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

misc/syntax/Makefile.am

@@ -1,4 +1,5 @@
 SYNTAXFILES =			\
+	Syntax			\
 	PKGBUILD.syntax		\
 	ada95.syntax		\
 	aspx.syntax		\
@@ -69,15 +70,9 @@ SYNTAXFILES =			\
 	yum-repo.syntax		\
 	yxx.syntax
 
-SYNTAXCONFFILES =		\
-	Syntax
-
 if USE_EDIT
 syntaxdir =		$(pkgdatadir)/syntax
 syntax_DATA =		$(SYNTAXFILES)
-
-syntaxconfdir =		$(sysconfdir)/@PACKAGE@
-syntaxconf_DATA =	$(SYNTAXCONFFILES)
 endif
 
-EXTRA_DIST =		$(SYNTAXFILES) $(SYNTAXCONFFILES)
+EXTRA_DIST =		$(SYNTAXFILES)

src/editor/editcmd.c

@@ -1008,11 +1008,11 @@ edit_load_syntax_file (WEdit * edit)
                             _("&User"), _("&System Wide"));
     }
 
-    extdir = concat_dir_and_file (mc_home, "syntax" PATH_SEP_STR "Syntax");
+    extdir = g_build_filename (mc_home, "syntax", "Syntax", (char *) NULL);
     if (!exist_file (extdir))
     {
         g_free (extdir);
-        extdir = concat_dir_and_file (mc_home_alt, "syntax" PATH_SEP_STR "Syntax");
+        extdir = g_build_filename (mc_home_alt, "syntax", "Syntax", (char *) NULL);
     }
 
     if (dir == 0)

src/editor/syntax.c

@@ -810,22 +810,19 @@ open_include_file (const char *filename)
         return fopen (filename, "r");
 
     g_free (error_file_name);
-    error_file_name = g_strconcat (home_dir, PATH_SEP_STR EDIT_DIR PATH_SEP_STR,
-                                   filename, (char *) NULL);
+    error_file_name = g_build_filename (home_dir, EDIT_DIR, filename, (char *) NULL);
     f = fopen (error_file_name, "r");
     if (f != NULL)
         return f;
 
     g_free (error_file_name);
-    error_file_name = g_strconcat (mc_home, PATH_SEP_STR, "syntax", PATH_SEP_STR,
-                                   filename, (char *) NULL);
+    error_file_name = g_build_filename (mc_home, "syntax", filename, (char *) NULL);
     f = fopen (error_file_name, "r");
     if (f != NULL)
         return f;
 
     g_free (error_file_name);
-    error_file_name = g_strconcat (mc_home_alt, PATH_SEP_STR "syntax" PATH_SEP_STR,
-                                   filename, (char *) NULL);
+    error_file_name = g_build_filename (mc_home_alt, "syntax", filename, (char *) NULL);
 
     return fopen (error_file_name, "r");
 }
@@ -1259,7 +1256,7 @@ edit_read_syntax_file (WEdit * edit, char ***pnames, const char *syntax_file,
     f = fopen (syntax_file, "r");
     if (f == NULL)
     {
-        lib_file = g_build_filename (mc_home, "Syntax", (char *) NULL);
+        lib_file = g_build_filename (mc_home_alt, "syntax", "Syntax", (char *) NULL);
         f = fopen (lib_file, "r");
         g_free (lib_file);
         if (f == NULL)