graphics/dataplot: Update to newest commit

This also unbreaks the build with GCC 10.

Changes:	https://github.com/usnistgov/dataplot/compare/43df775f24e2d2eca94e250ec302d7a5876ea2b2...2c1b27601a3b7523449de612613eadeead9a8f70
PR:		246700

graphics/dataplot/Makefile

@@ -2,8 +2,7 @@
 # $FreeBSD$
 
 PORTNAME=	dataplot
-DISTVERSION=	20200229
-PORTREVISION=	1
+DISTVERSION=	20200619
 CATEGORIES=	graphics
 
 MAINTAINER=	ports@FreeBSD.org
@@ -20,7 +19,7 @@ USE_GNOME=	cairo
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	usnistgov
-GH_TAGNAME=	43df775f24e2d2eca94e250ec302d7a5876ea2b2
+GH_TAGNAME=	2c1b27601a3b7523449de612613eadeead9a8f70
 
 WRKSRC_SUBDIR=	src
 

graphics/dataplot/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1585038375
-SHA256 (usnistgov-dataplot-20200229-43df775f24e2d2eca94e250ec302d7a5876ea2b2_GH0.tar.gz) = 050437d94e94706e665ade582387de154f7ddd16293ff83e1ec518d97c63ae6c
-SIZE (usnistgov-dataplot-20200229-43df775f24e2d2eca94e250ec302d7a5876ea2b2_GH0.tar.gz) = 21178437
+TIMESTAMP = 1593845821
+SHA256 (usnistgov-dataplot-20200619-2c1b27601a3b7523449de612613eadeead9a8f70_GH0.tar.gz) = 3a20625951407a51f3c36cf3c39f9bf86d0f5dd98bf3c5b6ef6f79a728bc559c
+SIZE (usnistgov-dataplot-20200619-2c1b27601a3b7523449de612613eadeead9a8f70_GH0.tar.gz) = 21733952

graphics/dataplot/files/patch-Makefile

@@ -1,4 +1,4 @@
---- Makefile.orig	2019-05-10 19:36:43 UTC
+--- Makefile.orig	2020-06-19 14:55:49 UTC
 +++ Makefile
 @@ -1,5 +1,5 @@
 -FC = gfortran
@@ -15,7 +15,7 @@
 -DPLIBDIR=$(PREFIX)/lib/dataplot
 +DPLIBDIR=$(DESTDIR)%%DATADIR%%
  
--FFLAGS += -O2 -DLINUX -fdefault-real-8 -fdefault-double-8
+-FFLAGS += -O2 -DLINUX -fdefault-real-8 -fdefault-double-8 -fmax-stack-var-size=1000000 -Wall
 -CFLAGS += -O2
 +FFLAGS += %%FFLAGS%%
 +CFLAGS += %%CFLAGS%% -I%%LOCALBASE%%/include