graphics/eos-movrec: take a different approach to unbreak the build

Fix the bad guard around #include <unistd.h> and drop the `register'
keyword which is no longer accepted as of C++ 17 instead of forcing
the particular (less strict) C++ standard.  Reclaim maintainership.

graphics/eos-movrec/Makefile

@@ -4,7 +4,7 @@ PORTREVISION=	6
 CATEGORIES=	graphics multimedia
 MASTER_SITES=	SF/${PORTNAME}/${PORTNAME}/${DISTVERSION}/
 
-MAINTAINER=	ports@FreeBSD.org
+MAINTAINER=	danfe@FreeBSD.org
 COMMENT=	Capture short movies with Canon DSLR camera
 WWW=		https://sourceforge.net/projects/eos-movrec/
 
@@ -14,7 +14,6 @@ LIB_DEPENDS=	libgphoto2.so:graphics/libgphoto2
 
 USES=		cmake compiler:c++11-lang dos2unix pkgconfig qt:5 tar:bzip2
 DOS2UNIX_FILES=	main.cpp
-USE_CXXSTD=	c++14
 USE_QT=		buildtools:build qmake:build core gui widgets
 
 ICON_SIZES=	16x16 32x32 128x128 256x256 512x512
@@ -23,7 +22,9 @@ DESKTOP_ENTRIES="EOS Camera Movie Recorder" "" "${PORTNAME}" \
 		"eos_movrec" "Graphics;Photography;Qt;" ""
 
 post-patch:
-	@${REINPLACE_CMD} -e 's|GLIBC|${OPSYS}|' ${WRKSRC}/os_api.h
+	@${REINPLACE_CMD} -e 's,GLIBC,${OPSYS},' ${WRKSRC}/mjpegwrt.c \
+		${WRKSRC}/os_api.h
+	@${REINPLACE_CMD} -e '/int/s,register ,,' ${WRKSRC}/histogramwnd.cpp
 .for s in 16 32 128 256 512
 	@cd ${WRKSRC}/mac.icons && \
 		${MV} ${s}.png ${PORTNAME}_${s}x${s}.png