Update to pixman-0.40.0.

ports/libpixman/libpixman.patch

@@ -1,12 +0,0 @@
-diff -Paur --no-dereference -- libpixman.upstream/config.sub libpixman/config.sub
---- libpixman.upstream/config.sub
-+++ libpixman/config.sub
-@@ -1264,7 +1264,7 @@
- 	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -solaris* | -sym* \
- 	      | -kopensolaris* \
- 	      | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
--	      | -aos* | -aros* \
-+	      | -aos* | -aros* | -sortix* \
- 	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
- 	      | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
- 	      | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \

ports/libpixman/libpixman.port

@@ -1,12 +1,13 @@
 NAME=libpixman
 BUILD_LIBRARIES='libpng?'
-VERSION=0.28.2
+VERSION=0.40.0
 DISTNAME=pixman-$VERSION
 COMPRESSION=tar.gz
 ARCHIVE=$DISTNAME.$COMPRESSION
-SHA256SUM=2afac9006adbc3fba28830007d7a9521b118d516342478dfe7818ffe4aeb9b55
+SHA256SUM=6d200dec3740d9ec4ec8d1180e25779c00bc749f94278c8b9021f5534db223fc
 UPSTREAM_SITE=https://www.cairographics.org/releases
 UPSTREAM_ARCHIVE=$ARCHIVE
 BUILD_SYSTEM=configure
+LICENSE=MIT
 MAKE_VARS='V=1'
 POST_INSTALL=tix-eradicate-libtool-la