multimedia/mlt7: fix conflict with multimeda/mlt6

- the recent updated to 7.8.0 brought back the conflicting file
  bin/melt -- remove that one again from this port.
- note the idea is to get rid of multimedia/mlt6 soon, so that
  this is no longer needed.

Reported by:	VVD <vvd@unislabs.com>

multimedia/mlt7/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=		${_MLT_PORTNAME}
 DISTVERSION=		${_MLT_VERSION}
+PORTREVISION=	1
 CATEGORIES?=		multimedia
 # Don't use GitHub "fake" downloads that are auto-generated from a
 # tag; the project uploads tarballs for each release.

multimedia/mlt7/files/patch-src_melt_CMakeLists.txt

@@ -0,0 +1,17 @@
+--- src/melt/CMakeLists.txt.orig	2022-07-29 16:08:23 UTC
++++ src/melt/CMakeLists.txt
+@@ -24,13 +24,5 @@ endif()
+     )
+ endif()
+ 
++set_target_properties(melt PROPERTIES OUTPUT_NAME "melt-${MLT_VERSION_MAJOR}")
+ install(TARGETS melt RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+-
+-if(UNIX AND NOT APPLE)
+-  install(CODE "execute_process(COMMAND ${CMAKE_COMMAND} -E rename melt melt-${MLT_VERSION_MAJOR} \
+-                                WORKING_DIRECTORY \$ENV\{DESTDIR\}${CMAKE_INSTALL_FULL_BINDIR})"
+-  )
+-  install(CODE "execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink melt-${MLT_VERSION_MAJOR} melt \
+-                                WORKING_DIRECTORY \$ENV\{DESTDIR\}${CMAKE_INSTALL_FULL_BINDIR})"
+-  )
+-endif()

multimedia/mlt7/pkg-plist

@@ -1,4 +1,3 @@
-bin/melt
 bin/melt-7
 include/mlt-7/framework/mlt.h
 include/mlt-7/framework/mlt_animation.h