gegl-devel: update to version 0.3.31 git master as of 20180323

For now, disable external operation ff-save which fails to build
with ffmpeg-devel.

Closes https://trac.macports.org/ticket/55389

graphics/gegl-devel/Portfile

@@ -8,9 +8,9 @@ PortGroup           gobject_introspection 1.0
 name                gegl-devel
 conflicts           gegl gegl-0.3
 set git_name        gegl
-set git_commit      e1ae5bd9744c269914f8ceb9706dd5d371de8d2e
-set git_date        20180218
-version             0.3.29-${git_date}
+set git_commit      e2e2379ad0a3207c3663f26a4e78213b89119f62
+set git_date        20180323
+version             0.3.31-${git_date}
 license             {GPL-3+ LGPL-3+}
 categories          graphics
 maintainers         {devans @dbevans}
@@ -28,9 +28,9 @@ master_sites        https://git.gnome.org/browse/${git_name}/snapshot/
 
 distname            ${git_name}-${git_commit}
 
-checksums           rmd160  d238704b1a3521b535aec71767baf6b4c04e3a92 \
-                    sha256  98d4bf48280aacf01e9b32a4dacbab54780d698c1be57f103184d9752268189e \
-                    size    24827846
+checksums           rmd160  054853a112d26c2937126977906581e88ed163b4 \
+                    sha256  951c217311dd2165df3a782ee9dc5bcdda53c8330a9d07a51e07cf40519abb22 \
+                    size    24844879
 
 depends_build       port:pkgconfig \
                     port:w3m \
@@ -58,6 +58,11 @@ depends_lib         port:babl-devel \
 
 patchfiles          patch-configure.ac.diff
 
+# disable external operation ff-save for now
+# AVFMT_RAWPICTURE removed in ffmpeg-devel
+# https://trac.macports.org/ticket/55389
+patchfiles-append  disable-broken-ffsave.patch
+
 post-patch {
     # http://trac.macports.org/ticket/35148
     if {${os.major} < 10} {

graphics/gegl-devel/files/disable-broken-ffsave.patch

@@ -0,0 +1,18 @@
+--- operations/external/Makefile.am.orig	2018-03-23 17:23:41.000000000 -0700
++++ operations/external/Makefile.am	2018-03-23 17:23:48.000000000 -0700
+@@ -105,14 +105,10 @@
+ endif
+
+ if HAVE_AVFORMAT
+-ops += ff-load.la ff-save.la
++ops += ff-load.la
+ ff_load_la_SOURCES = ff-load.c
+ ff_load_la_LIBADD = $(op_libs) $(AVFORMAT_LIBS)
+ ff_load_la_CFLAGS = $(AM_CFLAGS) $(AVFORMAT_CFLAGS) 
+-
+-ff_save_la_SOURCES = ff-save.c
+-ff_save_la_LIBADD = $(op_libs) $(AVFORMAT_LIBS)
+-ff_save_la_CFLAGS = $(AM_CFLAGS) $(AVFORMAT_CFLAGS) -Wno-deprecated-declarations
+ endif
+
+ if HAVE_UMFPACK