macosx: add rpath for Frameworks

The Frameworks folder was missing in the rpath, leading to Frameworks
like Sparkle requiring change of the install_name after it was built
instead of just using rpath properly.

bin/Makefile.am

@@ -63,6 +63,7 @@ vlc_osx_static_OBJCFLAGS = $(AM_OBJCFLAGS) \
 vlc_osx_static_LDFLAGS = $(vlc_osx_LDFLAGS) -static
 vlc_osx_static_LDFLAGS += -Xlinker -rpath -Xlinker "@executable_path/../lib/.libs/"
 vlc_osx_static_LDFLAGS += -Xlinker -rpath -Xlinker "@executable_path/../src/.libs/"
+vlc_osx_static_LDFLAGS += -Xlinker -rpath -Xlinker "@executable_path/../Frameworks/"
 vlc_osx_static_LDADD = $(vlc_osx_LDADD)
 if HAVE_BREAKPAD
 vlc_osx_static_LDFLAGS += -Wl,-framework,Breakpad