vdr-1.4.0 Makefile fixes (libsubvdr)

[syphir at syphir.sytes.net (C.Y.M)]

I noticed that some of the shared objects created in ./PLUGINS/lib have a name
like libsubvdr-*.so.$(APIVERSION). (from softdevice plugin).  The following
changes to the Makefile are required for proper installation and cleanup:

--snip--

 # Plugins:

 install-plugins: plugins
-       @cp $(PLUGINDIR)/lib/libvdr-*.so.$(APIVERSION) $(PLUGINLIBDIR)
+       @cp $(PLUGINDIR)/lib/*.so.$(APIVERSION) $(BINDIR)/$(PLUGINLIBDIR)

 # Source documentation:

--snip--

@@ -191,7 +191,7 @@

 clean-plugins:
        @for i in `ls $(PLUGINDIR)/src | grep -v '[^a-z0-9]'`; do $(MAKE) -C
"$(PLUGINDIR)/src/$$i" clean; done
-       @-rm -f $(PLUGINDIR)/lib/libvdr-*.so.$(APIVERSION)
+       @-rm -f $(PLUGINDIR)/lib/*.so.$(APIVERSION)

 # Install the files:

--snip--

BR.