update print/poppler

Hi,

this updates poppler to 0.51.0. Only the main poppler library has
changed (some #ifdefs removed at other places because CMYK rasterization
is no longer optional). From the Changlog:

* Splash: Always enable support for CMYK rasterization
* CairoOutputDev: Check scaled dimensions for 0. Issue #737
* BaseCryptStream: Fix potential uninitialized memory read
* SplashBitmap: Fix wrong width condition for splashModeDeviceN8
* Fix crashes in malformed files

My build machine is too slow, so I didn't yet have a change to test
it. So if anyone else wants to beat me and give it a try...

Ciao,
Kil

Index: Makefile
===================================================================
RCS file: /cvs/ports/print/poppler/Makefile,v
retrieving revision 1.148
diff -u -p -r1.148 Makefile
--- Makefile 15 Sep 2019 21:29:40 -0000 1.148
+++ Makefile 29 Sep 2019 17:43:49 -0000
@@ -4,9 +4,8 @@ COMMENT-main= PDF rendering library
COMMENT-qt5= Qt5 interface to PDF rendering library
COMMENT-utils= PDF conversion tools and utilities

-V= 0.80.0
+V= 0.81.0
DISTNAME= poppler-$V
-REVISION-main= 1
CATEGORIES= print
PKGNAME-main= poppler-$V
PKGNAME-utils= poppler-utils-$V
@@ -14,7 +13,7 @@ PKGNAME-qt5= poppler-qt5-$V

EXTRACT_SUFX= .tar.xz

-SHARED_LIBS += poppler 55.0 # 90.0
+SHARED_LIBS += poppler 56.0 # 91.0
SHARED_LIBS += poppler-glib 19.3 # 8.14
SHARED_LIBS += poppler-qt5 7.3 # 1.21
SHARED_LIBS += poppler-cpp 11.0 # 0.7
Index: distinfo
===================================================================
RCS file: /cvs/ports/print/poppler/distinfo,v
retrieving revision 1.75
diff -u -p -r1.75 distinfo
--- distinfo 10 Sep 2019 13:52:42 -0000 1.75
+++ distinfo 29 Sep 2019 17:43:49 -0000
@@ -1,2 +1,2 @@
-SHA256 (poppler-0.80.0.tar.xz) = TTymt5vBO44kCS40+D7184fzuwu9c1mmwHjgnGltEE8=
-SIZE (poppler-0.80.0.tar.xz) = 1548908
+SHA256 (poppler-0.81.0.tar.xz) = IS0CCwNbZ7Nslma9CKx3jf8yIthcAcM4eH1Ubw+b/gI=
+SIZE (poppler-0.81.0.tar.xz) = 1548944