[wip/jafar-image] Add a patch to use lrint instead of nearbyint

nearbyint is not supported on some plateform, in particular NetBSD, so
use lrint, which is in this case more appropriate.

jafar-image/Makefile

 PKGVERSION=		2.1
+PKGREVISION=	1
 DISTNAME=		jafar-image-2.1
 PKGNAME=		jafar-image-2.1
 CATEGORIES=		image

jafar-image/distinfo

 SHA1 (jafar-image-2.1.tar.gz) = ac650ba22f4d1004d1b8f0d6eac863f9e4bdbf11
 RMD160 (jafar-image-2.1.tar.gz) = 55112939abd8c40a195699d35c72271367323f05
 Size (jafar-image-2.1.tar.gz) = 148533 bytes
+SHA1 (patch-aa) = a73cb4873d12f264141b99116fbb412af0875e91

jafar-image/patches/patch-aa

+diff --git a/include/image/Image.hpp b/include/image/Image.hpp
+nearbyint is not supported on NetBSD. Moreover, the lrint semantic is more
+correct in this case.
+
+index 53f32f3..c37d501 100644
+--- include/image/Image.hpp
++++ include/image/Image.hpp
+@@ -594,7 +594,7 @@ namespace jafar {
+       {
+         case JfrImage_INTERP_NEAREST:
+         {
+-          return getPixelValue<channeltype>( (int)nearbyint( x_ ), (int)nearbyint( y_ ), channel_ );
++          return getPixelValue<channeltype>( lrint( x_ ), lrint( y_ ), channel_ );
+         }
+         case JfrImage_INTERP_BILINEAR:
+         {