Small cleanups backported from Plan 9 from User Space.
 [rsc] --rw-rw-r-- M 399900 glenda sys 737 Sep 26 16:28 sys/src/libhttpd/gethead.c
	/n/sourcesdump/2005/0926/plan9/sys/src/libhttpd/gethead.c:19,25 - 
	/n/sourcesdump/2005/0927/plan9/sys/src/libhttpd/gethead.c:19,25
	  		s = (char*)hin->pos;
	  		pp = s;
	  		while(p = memchr(pp, '\n', (char*)hin->stop - pp)){
	- 			if(!many || p == pp || p == pp + 1 && *pp == '\r'){
	+ 			if(!many || p == pp || (p == pp + 1 && *pp == '\r')){
	  				pp = p + 1;
	  				break;
	  			}
	/n/sourcesdump/2005/0926/plan9/sys/src/libhttpd/gethead.c:28,40 - 
	/n/sourcesdump/2005/0927/plan9/sys/src/libhttpd/gethead.c:28,40
	  		hin->pos = (uchar*)pp;
	  		n = pp - s;
	  		if(c->hstop + n > &c->header[HBufSize])
	- 			return 0;
	+ 			return -1;
	  		memmove(c->hstop, s, n);
	  		c->hstop += n;
	  		*c->hstop = '\0';
	  		if(p != nil)
	- 			return 1;
	- 		if(hreadbuf(hin, hin->pos) == nil || hin->state == Hend)
	  			return 0;
	+ 		if(hreadbuf(hin, hin->pos) == nil || hin->state == Hend)
	+ 			return -1;
	  	}
	  }
 [rsc] --rw-rw-r-- M 399900 glenda sys 18965 Sep 26 16:28 sys/src/libhttpd/parse.c
	/n/sourcesdump/2005/0926/plan9/sys/src/libhttpd/parse.c:198,207 - 
	/n/sourcesdump/2005/0927/plan9/sys/src/libhttpd/parse.c:198,209
	  
	  	memset(&h, 0, sizeof(h));
	  	h.c = c;
	- 	alarm(timeout);
	- 	if(!hgethead(c, 1))
	+ 	if(timeout)
	+ 		alarm(timeout);
	+ 	if(hgethead(c, 1) < 0)
	  		return -1;
	- 	alarm(0);
	+ 	if(timeout)
	+ 		alarm(0);
	  	h.hstart = c->hpos;
	  
	  	if(setjmp(h.jmp) == -1)
 [rsc] --rw-rw-r-- M 399900 glenda sys 5071 Sep 26 16:28 sys/src/libhttpd/parsereq.c
	/n/sourcesdump/2005/0926/plan9/sys/src/libhttpd/parsereq.c:15,21 - 
	/n/sourcesdump/2005/0927/plan9/sys/src/libhttpd/parsereq.c:15,20
	  static	int		getc(HConnect*);
	  static	char*		getword(HConnect*);
	  static	Strings		parseuri(HConnect *c, char*);
	- static	Strings		stripmagic(char*);
	  static	Strings		stripsearch(char*);
	  
	  /*
	/n/sourcesdump/2005/0926/plan9/sys/src/libhttpd/parsereq.c:41,50 - 
	/n/sourcesdump/2005/0927/plan9/sys/src/libhttpd/parsereq.c:40,51
	  	 * later requests have to come quickly.
	  	 * only works for http/1.1 or later.
	  	 */
	- 	alarm(timeout);
	- 	if(!hgethead(c, 0))
	- 		return 0;
	- 	alarm(0);
	+ 	if(timeout)
	+ 		alarm(timeout);
	+ 	if(hgethead(c, 0) < 0)
	+ 		return -1;
	+ 	if(timeout)
	+ 		alarm(0);
	  	c->reqtime = time(nil);
	  	c->req.meth = getword(c);
	  	if(c->req.meth == nil){
	/n/sourcesdump/2005/0926/plan9/sys/src/libhttpd/parsereq.c:284,290 - 
	/n/sourcesdump/2005/0927/plan9/sys/src/libhttpd/parsereq.c:285,291
	  		}
	  		ch = getc(c);
	  	}
	- 	return nil;
	+ 	return nil;	/* stupid 8c */
	  }
	  
	  static int
 [sys] --rwxrwxr-x M 399900 glenda sys 245198 Sep 26 23:08 386/bin/venti/venti
 [sys] --rwxrwxr-x M 399900 glenda sys 291589 Sep 26 23:08 386/bin/ip/httpd/httpd
	/sys/src/libhttpd/gethead.c:hgethead
	/sys/src/libhttpd/parse.c:hparseheaders
	/sys/src/libhttpd/parsereq.c:hparsereq
 [sys] --rwxrwxr-x M 399900 glenda sys 114798 Sep 26 23:08 386/bin/ip/httpd/imagemap
 [sys] --rwxrwxr-x M 399900 glenda sys 123085 Sep 26 23:08 386/bin/ip/httpd/man2html
	/sys/src/libhttpd/gethead.c:hgethead
	/sys/src/libhttpd/parse.c:hparseheaders
 [sys] --rwxrwxr-x M 399900 rsc sys 115643 Sep 26 23:08 386/bin/ip/httpd/netlib_find
	/sys/src/cmd/ip/httpd/log.c:writelog
	/sys/src/libhttpd/gethead.c:hgethead
	/sys/src/libhttpd/parse.c:getc
	/sys/src/libhttpd/parse.c:hparseheaders
	/sys/src/libhttpd/parse.c:hreqcleanup
	/sys/src/libhttpd/parse.c:mimeauthorization
 [sys] --rwxrwxr-x M 399900 rsc sys 114439 Sep 26 23:08 386/bin/ip/httpd/netlib_history
 [sys] --rwxrwxr-x M 399900 glenda sys 131094 Sep 26 23:08 386/bin/ip/httpd/save
 [sys] --rwxrwxr-x M 399900 presotto sys 131239 Sep 26 23:08 386/bin/ip/httpd/webls
 [sys] --rwxrwxr-x M 399900 glenda sys 112677 Sep 26 23:08 386/bin/ip/httpd/wikipost
	/sys/src/libhttpd/gethead.c:hgethead
	/sys/src/libhttpd/parse.c:hparseheaders
 [sys] --rw-rw-r-- M 399900 glenda sys 99596 Sep 26 23:08 386/lib/libhttpd.a