Rename getline() to procmail_getline() to avoid namespace clash with
POSIX getline(). Fixes FTBFS.

Copied from Debian:
http://sources.debian.net/src/procmail/3.22-24/debian/patches/24/

References:
http://bugs.debian.org/549426

--- a/src/fields.c
+++ b/src/fields.c
@@ -110,16 +110,16 @@
 		    /* try and append one valid field to rdheader from stdin */
 int readhead P((void))
 { int idlen;
-  getline();
+  procmail_getline();
   if((idlen=breakfield(buf,buffilled))<=0) /* not the start of a valid field */
      return 0;
   if(idlen==STRLEN(FROM)&&eqFrom_(buf))			/* it's a From_ line */
    { if(rdheader)
 	return 0;			       /* the From_ line was a fake! */
-     for(;buflast=='>';getline());	    /* gather continued >From_ lines */
+     for(;buflast=='>';procmail_getline());	    /* gather continued >From_ lines */
    }
   else
-     for(;;getline())		      /* get the rest of the continued field */
+     for(;;procmail_getline())		      /* get the rest of the continued field */
       { switch(buflast)			     /* will this line be continued? */
 	 { case ' ':case '\t':				  /* yep, it sure is */
 	      continue;
--- a/src/formail.c
+++ b/src/formail.c
@@ -819,7 +819,7 @@
       { if(split)		       /* gobble up the next start separator */
 	 { buffilled=0;
 #ifdef sMAILBOX_SEPARATOR
-	   getline();buffilled=0;		 /* but only if it's defined */
+	   procmail_getline();buffilled=0;		 /* but only if it's defined */
 #endif
 	   if(buflast!=EOF)					   /* if any */
 	      goto splitit;
--- a/src/formisc.c
+++ b/src/formisc.c
@@ -115,7 +115,7 @@
   buf[buffilled++]=c;
 }
 
-int getline P((void))			   /* read a newline-terminated line */
+int procmail_getline P((void))			   /* read a newline-terminated line */
 { if(buflast==EOF)			 /* at the end of our Latin already? */
    { loadchar('\n');					  /* fake empty line */
      return EOF;					  /* spread the word */
--- a/src/formisc.h
+++ b/src/formisc.h
@@ -17,4 +17,4 @@
 char*
  skipwords P((char*start));
 int
- getline P((void));
+ procmail_getline P((void));
db937455ae535de33b3e66ba'>root</a>/<a href='/guix/log/gnu?id=80556494282f5ffddb937455ae535de33b3e66ba'>gnu</a>/<a href='/guix/log/gnu/services?id=80556494282f5ffddb937455ae535de33b3e66ba'>services</a>/<a href='/guix/log/gnu/services/herd.scm?id=80556494282f5ffddb937455ae535de33b3e66ba'>herd.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/services/herd.scm?id=80556494282f5ffddb937455ae535de33b3e66ba&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-07-21 11:58:44 -0400'>2023-07-21</span></td><td><a href='/guix/commit/gnu/services/herd.scm?id=f15c5edb1a2423402b32a5262627eb2141becf65'>services: herd: Add a new 'current-service' procedure.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2023-05-30 00:15:29 +0200'>2023-05-30</span></td><td><a href='/guix/commit/gnu/services/herd.scm?id=d23d8fcee99e7b127f9e649925caca9cf0d36e76'>services: herd: "Resolve" transient services only when needed.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-04-21 16:16:37 +0200'>2023-04-21</span></td><td><a href='/guix/commit/gnu/services/herd.scm?id=95731b4ef1991f5b85aa9ec9d4fb97c006bec65d'>services: herd: 'load-services/safe' is synonymous with 'load-services'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-03-26 23:24:23 +0200'>2023-03-26</span></td><td><a href='/guix/commit/gnu/services/herd.scm?id=547965aa27b6a09cadf42130b7ec7db3f1aee61f'>services: herd: Remove workaround for Shepherd &lt; 0.5.0.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-05-28 23:23:36 +0200'>2022-05-28</span></td><td><a href='/guix/commit/gnu/services/herd.scm?id=b04ae71defe0bd2a5fbd2df07d55cfe3eb40cba9'>services: herd: Add 'wait-for-service'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-04-10 00:17:40 +0200'>2022-04-10</span></td><td><a href='/guix/commit/gnu/services/herd.scm?id=a2c759c8304c461d096ab763568e7f71546ff4e8'>services: herd: Report whether a service is transient.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>