japanese/mh: include errno.h for errno

errno must be accessed by a macro from errno.h.

Due to the sheer number of instances use REINPLACE_CMD to replace most
instances of "extern int errno;" with "#include <errno.h>".  In a few
places the errno decleration was a function-scope global where
including a header didn't make sense patch those out (the files already
included errno.h).  This isn't the most elegant, but it's the least of
the issues with this code.

PR:		281787
Approved by:	portmgr (build fix blanket), mikael

japanese/mh/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	mh
 PORTVERSION=	${VERSION}.j${JP_VERSION}
-PORTREVISION=	7
+PORTREVISION=	8
 CATEGORIES=	japanese mail
 MASTER_SITES=	ftp://ftp.laic.u-hyogo.ac.jp/pub/net/mh/
 DISTNAME=	${PORTNAME}-${VERSION}-JP-${JP_VERSION}
@@ -47,6 +47,9 @@ post-patch:
 		print; \
 	}' ${i}.rf > ${i}.tmp && ${MV} ${i}.tmp ${i}.rf)
 .endfor
+	${FIND} ${WRKSRC} -type f \! -name \*.orig | \
+	    xargs grep -l "extern[ 	]*int[ 	]*errno" | \
+	    xargs ${REINPLACE_CMD} -e "s/^extern[ 	]*int[ 	]*errno;/#include <errno.h>/"
 
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/bin/*

japanese/mh/files/patch-sbr_ruserpass.c

@@ -0,0 +1,10 @@
+--- sbr/ruserpass.c.orig
++++ sbr/ruserpass.c
+@@ -66,7 +66,6 @@
+ 	char myname[MAXHOSTNAMELEN], *mydomain;
+ 	int t, i, c, usedefault = 0;
+ 	struct stat stb;
+-	extern int errno;
+ 
+ 	hdir = getenv("HOME");
+ 	if (hdir == NULL)

japanese/mh/files/patch-uip_mshcmds.c

@@ -0,0 +1,19 @@
+--- uip/mshcmds.c.orig
++++ uip/mshcmds.c
+@@ -29,8 +29,6 @@
+ 
+ /*  */
+ 
+-extern int errno;
+-
+ 				/* BURST */
+ static char delim3[] = "-------";/* from burst.c */
+ 
+@@ -3529,7 +3527,6 @@
+     (void) strcpy (tmpfil, m_scratch ("", invo_name));
+     if ((out = fopen (tmpfil, "w")) == NULL) {
+ 	int     olderr;
+-	extern int  errno;
+ 	char    newfil[80];
+ 
+ 	olderr = errno;

japanese/mh/files/patch-zotnet_mf_muinc.c

@@ -0,0 +1,10 @@
+--- zotnet/mf/muinc.c.orig
++++ zotnet/mf/muinc.c
+@@ -81,7 +81,6 @@
+ {
+     int     count,
+             fd;
+-    extern int  errno;
+ 
+     for (count = 2; count > 0; count--)
+ 	if ((fd = lkopen (file, 1)) == NOTOK)

japanese/mh/files/patch-zotnet_mf_uminc.c

@@ -0,0 +1,10 @@
+--- zotnet/mf/uminc.c.orig
++++ zotnet/mf/uminc.c
+@@ -86,7 +86,6 @@
+     int     clear,
+             count,
+             fd;
+-    extern int  errno;
+     struct stat stbuf;
+ 
+     for (clear = FALSE, count = 2; count > 0; count--)