Avoid soname versions for plugins

plugins/Makefile.am

@@ -4,22 +4,7 @@
 # Put Together AM_CPPFLAGS and AM_LDFLAGS
 include $(top_srcdir)/lib_flags.am
 
-# This linker flag specifies libtool version info.
-# See http://www.gnu.org/software/libtool/manual/libtool.html#Libtool-versioning
-# for information regarding incrementing `-version-info`.
-plugin_version_info = -version-info 0:0:0
-
-AM_LDFLAGS += -module -shared -export-dynamic $(NOUNDEFINED)
-
-if ISMINGW
-  AM_LDFLAGS += -avoid-version
-else !ISMINGW
-if ISCYGWIN
-AM_LDFLAGS += -avoid-version
-else !ISCYGWIN
-AM_LDFLAGS += $(plugin_version_info)
-endif !ISCYGWIN
-endif !ISMINGW
+AM_LDFLAGS += -module -avoid-version -shared -export-dynamic $(NOUNDEFINED)
 
 # Create an alternate directory if not installing or for noinst installs.
 ALTPLUGINDIR = ${abs_top_builddir}/plugins/plugindir