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));
d14e0b08f023baf2e75d71a3'>root</a>/<a href='/guix/log/tests?id=ec982546941b59fdd14e0b08f023baf2e75d71a3'>tests</a>/<a href='/guix/log/tests/guix-package.sh?id=ec982546941b59fdd14e0b08f023baf2e75d71a3'>guix-package.sh</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/tests/guix-package.sh?id=ec982546941b59fdd14e0b08f023baf2e75d71a3&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
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<tr><td><span title='2019-05-13 10:54:13 -0400'>2019-05-13</span></td><td><a href='/guix/commit/tests/guix-package.sh?id=ccabb664ed55d44767e037bb73169be2ecf9449d'>tests: Fix guix-package.sh.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
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<tr><td><span title='2018-11-11 23:53:29 +0100'>2018-11-11</span></td><td><a href='/guix/commit/tests/guix-package.sh?id=652163154c06b47936a453f44ea35938789718de'>guix package: '--show' errors when asked for a non-existent package.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
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<tr><td><span title='2018-07-13 17:28:39 +0200'>2018-07-13</span></td><td><a href='/guix/commit/tests/guix-package.sh?id=bc6e291ef0b3c71c07e50d88d7764e5dd334e8b1'>guix package: Use relative symlinks to generations.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-06-06 14:37:35 +0200'>2018-06-06</span></td><td><a href='/guix/commit/tests/guix-package.sh?id=477ee222aa796257b5f32966da662e76fe706332'>tests: Adjust 'guix package' test to "python2" name.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-03-31 23:30:50 +0200'>2018-03-31</span></td><td><a href='/guix/commit/tests/guix-package.sh?id=fc95dc4c34bf88ebd8c21752bf6d54b5cf752d1a'>guix package: Add '--allow-collisions'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-02-27 15:46:56 +0100'>2018-02-27</span></td><td><a href='/guix/commit/tests/guix-package.sh?id=0fb405796cdb5579c911b30da9d40b4a18cd7f07'>guix package: '--search' no longer shows superseded packages.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-11-11 15:33:47 +0100'>2017-11-11</span></td><td><a href='/guix/commit/tests/guix-package.sh?id=ae0307f7c2a6f382311a1cedcbbb3d35b6623bab'>tests: Adjust to new unbound-variable error message.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-06-26 22:52:06 +0200'>2017-06-26</span></td><td><a href='/guix/commit/tests/guix-package.sh?id=fc8fdcf56ecc159cb4e85ffdde60a54c4fa5c04f'>guix package: 'guix package -r PKG -u' does not upgrade PKG.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>