fdclone: set default message lang to English.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/fdclone.rb

@@ -28,6 +28,8 @@ class Fdclone < Formula
   def caveats; <<-EOS.undent
     To install the initial config file:
         install -c -m 0644 #{share}/fd2rc.dist ~/.fd2rc
+    To set application messages to Japanese, edit your .fd2rc:
+        MESSAGELANG="ja"
     EOS
   end
 end
@@ -44,3 +46,26 @@ index 8bc70ab..39b0d28 100644
 +#define USEDATADIR
 +
  #endif	/* !__MACHINE_H_ */
+diff --git a/custom.c b/custom.c
+index d7a995f..45b96c6 100644
+--- a/custom.c
++++ b/custom.c
+@@ -561,7 +561,7 @@ static CONST envtable envlist[] = {
+ 	{"FD_URLKCODE", &urlkcode, DEFVAL(NOCNV), URLKC_E, T_KNAM},
+ #endif
+ #if	!defined (_NOENGMES) && !defined (_NOJPNMES)
+-	{"FD_MESSAGELANG", &messagelang, DEFVAL(NOCNV), MESL_E, T_MESLANG},
++	{"FD_MESSAGELANG", &messagelang, DEFVAL("C"), MESL_E, T_MESLANG},
+ #endif
+ #ifdef	DEP_FILECONV
+ 	{"FD_SJISPATH", &sjispath, DEFVAL(SJISPATH), SJSP_E, T_KPATHS},
+@@ -857,7 +857,9 @@ int no;
+ #if	defined (DEP_KCONV) || (!defined (_NOENGMES) && !defined (_NOJPNMES))
+ 		case T_MESLANG:
+ # ifndef	_NOCATALOG
++			if (!cp) cp = def_str(no);
+ 			catname = cp;
++			chkcatalog();
+ /*FALLTHRU*/
+ # endif
+ 		case T_KIN: