- unified snd_pcm_hw_params_* functions

- added backward compatibility for older non-compatible functions
- added --with-compat-rc3 to configure script to build library
  backwards compatible with 0.9.0rc3
- added symbol versioning like libc.so.6
  - ALSA_0.9      - alsa base
  - ALSA_0.9.0rc4 - first set of new functions (snd_pcm_hw_params_*)

include/Makefile.am

@@ -1,6 +1,14 @@
 sysincludedir = ${includedir}/sys
 alsaincludedir = ${includedir}/alsa
 
+if COMPATIBILITY_BUILD_RC3
+  SND_LIB_MAJOR = 0
+  SND_LIB_MINOR = 9
+  SND_LIB_SUBMINOR = 0
+  SND_LIB_EXTRAVER = 100000  # there was a bug....
+  SND_LIB_VERSION = 0.9.0rc3
+endif
+
 alsainclude_HEADERS = asoundlib.h asoundef.h \
 		      version.h global.h input.h output.h error.h \
 		      conf.h pcm.h pcm_plugin.h rawmidi.h timer.h \
@@ -8,9 +16,9 @@ alsainclude_HEADERS = asoundlib.h asoundef.h \
 		      seq_event.h seq.h seqmid.h seq_midi_event.h \
 		      conv.h instr.h iatomic.h
 
-noinst_HEADERS = sys.h search.h list.h aserver.h local.h config.h
+noinst_HEADERS = sys.h search.h list.h aserver.h local.h config.h alsa-symbols.h
 
-EXTRA_CLEAN = stamp-vh
+CLEANFILES = stamp-vh version.h
 
 version.h: stamp-vh
 	@:
@@ -31,6 +39,9 @@ stamp-vh: $(top_builddir)/configure.in
 	@echo "/** library version (string) */" >> ver.tmp
 	@echo "#define SND_LIB_VERSION_STR	\"$(SND_LIB_VERSION)\"" >> ver.tmp
 	@echo >> ver.tmp
+if COMPATIBILITY_BUILD_RC3
+	@echo "#define SND_COMPATIBILITY_BUILD_RC3 1" >> ver.tmp
+endif
 	@cmp -s version.h ver.tmp \
           || (echo "Updating version.h"; \
               cp ver.tmp version.h; \