configure: Enable Avalon support by default now that it behaves reasonably

README

@@ -112,7 +112,7 @@ Optional Dependencies:
 
 
 BFGMiner specific configuration options:
-	--enable-avalon         Compile support for Avalon (default disabled)
+	--disable-avalon        Compile support for Avalon (default enabled)
 	--enable-cpumining      Build with cpu mining support(default disabled)
 	--disable-opencl        Build without support for OpenCL (default enabled)
 	--disable-adl           Build without ADL monitoring (default enabled)

configure.ac

@@ -316,8 +316,9 @@ AM_CONDITIONAL([HAS_ICARUS], [test x$icarus = xyes])
 avalon="no"
 
 AC_ARG_ENABLE([avalon],
-	[AC_HELP_STRING([--enable-avalon],[Compile support for Avalon (default disabled)])],
-	[avalon=$enableval]
+	[AC_HELP_STRING([--disable-avalon],[Compile support for Avalon (default enabled)])],
+	[avalon=$enableval],
+	[avalon=yes]
 	)
 if test "x$avalon" = xyes; then
 	AC_DEFINE([USE_AVALON], [1], [Defined to 1 if Avalon support is wanted])