Revert "Insure that the alsa plugin links against libao, since the plugin...

Revert "Insure that the alsa plugin links against libao, since the plugin calls ao_is_big_endian from libao."

This reverts commit d11c3f1a.

This change was the wrong way to 'fix' the problem reported in trac #1779.
In normal use the plugin should already have access to the symbols from
the library that loaded it, so creating a circular dependency between
them isn't helpful.

If some other user is dynamically loading the core libao itself as a
plugin to their application, then they need to use RTLD_GLOBAL to ensure
its symbols are made available to its plugins (in the same way that libao
needs to do this when dynamically loading alsa for alsa's own plugins).

src/Makefile.am

 ## Process this file with automake to produce Makefile.in
 
 AUTOMAKE_OPTIONS = foreign
-SUBDIRS = . plugins
+SUBDIRS = plugins
 
 AM_CPPFLAGS = -I$(top_builddir)/include/ao \
 	      -I$(top_srcdir)/include \

src/plugins/alsa/Makefile.am

@@ -20,7 +20,7 @@ libdir = $(plugindir)
 lib_LTLIBRARIES = $(alsaltlibs)
 
 libalsa_la_LDFLAGS = @PLUGIN_LDFLAGS@
-libalsa_la_LIBADD = @ALSA_LIBS@ ../../libao.la
+libalsa_la_LIBADD = @ALSA_LIBS@
 libalsa_la_SOURCES = $(alsasources)
 
 EXTRA_DIST = ao_alsa.c