Fix compiler issues for 12.0

- replace preprocessor variable _GCU_VERSION_ with __VERSION__
- Bump PORTREVISION

audio/lmms/Makefile

@@ -4,7 +4,7 @@
 PORTNAME=	lmms
 PORTVERSION=	1.1.3
 DISTVERSIONPREFIX=	v
-PORTREVISION=	2
+PORTREVISION=	3
 PORTEPOCH=	2
 CATEGORIES=	audio
 

audio/lmms/files/patch-src_core_main.cpp

@@ -0,0 +1,11 @@
+--- src/core/main.cpp.orig	2018-07-02 13:15:50 UTC
++++ src/core/main.cpp
+@@ -156,7 +156,7 @@ int main( int argc, char * * argv )
+ 	"License as published by the Free Software Foundation; either\n"
+ 	"version 2 of the License, or (at your option) any later version.\n\n"
+ 	"Try \"%s --help\" for more information.\n\n", LMMS_VERSION,
+-				PLATFORM, MACHINE, QT_VERSION_STR, GCC_VERSION,
++				PLATFORM, MACHINE, QT_VERSION_STR, __VERSION__,
+ 				argv[0] );
+ 
+ 			return( EXIT_SUCCESS );

audio/lmms/files/patch-src_gui_about__dialog.cpp

@@ -0,0 +1,11 @@
+--- src/gui/about_dialog.cpp.orig	2018-07-02 13:46:00 UTC
++++ src/gui/about_dialog.cpp
+@@ -46,7 +46,7 @@ aboutDialog::aboutDialog() :
+ 					arg( PLATFORM ).
+ 					arg( MACHINE ).
+ 					arg( QT_VERSION_STR ).
+-					arg( GCC_VERSION ) );
++					arg( __VERSION__ ) );
+ 
+ 	authorLabel->setPlainText( embed::getText( "AUTHORS" ) );
+