dnsutils: fix path to 'resolv.conf' in liblwres (#1616)

packages/dnsutils/build.sh

@@ -1,6 +1,7 @@
 TERMUX_PKG_HOMEPAGE=https://www.isc.org/downloads/bind/
 TERMUX_PKG_DESCRIPTION="Clients provided with BIND"
 TERMUX_PKG_VERSION=9.11.1-P3
+TERMUX_PKG_REVISION=1
 TERMUX_PKG_SHA256=52426e75432e46996dc90f24fca027805a341c38fbbb022b60dc9acd2677ccf4
 TERMUX_PKG_SRCURL="ftp://ftp.isc.org/isc/bind9/${TERMUX_PKG_VERSION}/bind-${TERMUX_PKG_VERSION}.tar.gz"
 TERMUX_PKG_DEPENDS="openssl, readline, resolv-conf"

packages/dnsutils/lwres-fix-hardcoded-paths.patch

@@ -0,0 +1,12 @@
+diff -uNr bind-9.11.1-P3/lib/lwres/include/lwres/lwres.h bind-9.11.1-P3.mod/lib/lwres/include/lwres/lwres.h
+--- bind-9.11.1-P3/lib/lwres/include/lwres/lwres.h	2017-07-07 18:01:52.000000000 +0300
++++ bind-9.11.1-P3.mod/lib/lwres/include/lwres/lwres.h	2017-10-04 16:48:56.466109542 +0300
+@@ -74,7 +74,7 @@
+ #define LWRES_UDP_PORT		921	/*%< UDP Port Number */
+ #define LWRES_RECVLENGTH	16384 /*%< Maximum Packet Length */
+ #define LWRES_ADDR_MAXLEN	16	/*%< changing this breaks ABI */
+-#define LWRES_RESOLV_CONF	"/etc/resolv.conf" /*%< Location of resolv.conf */
++#define LWRES_RESOLV_CONF	"@TERMUX_PREFIX@/etc/resolv.conf" /*%< Location of resolv.conf */
+ 
+ /*% DNSSEC is not required (input).  Only relevant to rrset queries. */
+ #define LWRES_FLAG_TRUSTNOTREQUIRED	0x00000001U