mixer simple basic abstraction - added python binding

reasons:
- rapid development
- class-like code structure
- more readable code
features:
- hcontrol binding is managed from python (opportunity to create
  virtual mixer without driver or join multiple cards to behave as one)

modules/mixer/simple/Makefile.am

@@ -1,4 +1,5 @@
 pkglibdir = @ALSA_PLUGIN_DIR@/smixer
+pythonlibs = @PYTHON_LIBS@
 
 AM_CFLAGS = -g -O2 -W -Wall
 
@@ -8,6 +9,10 @@ pkglib_LTLIBRARIES = smixer-sbase.la \
 		     smixer-ac97.la \
 		     smixer-hda.la
 
+if BUILD_PYTHON
+pkglib_LTLIBRARIES += smixer-python.la
+endif
+
 noinst_HEADERS = sbase.h
 
 smixer_sbase_la_SOURCES = sbase.c
@@ -21,3 +26,9 @@ smixer_ac97_la_LIBADD = ../../../src/libasound.la
 smixer_hda_la_SOURCES = hda.c sbasedl.c
 smixer_hda_la_LDFLAGS = -module -avoid-version
 smixer_hda_la_LIBADD = ../../../src/libasound.la
+
+if BUILD_PYTHON
+smixer_python_la_SOURCES = python.c
+smixer_python_la_LDFLAGS = -module -avoid-version $(pythonlibs)
+smixer_python_la_LIBADD = ../../../src/libasound.la
+endif