autoconf-2.65 must be after `@defmac' to use `@defmacx'

autoconf-2.65

根据以下补丁文件。修改DOC目录下的autoconf.texi （也就是去掉@c）

--- autoconf-2.65/doc/autoconf.texi 2009-11-05 10:42:15.000000000 +0800
+++ autoconf-2.65/doc/autoconf.texi.new	2013-05-28 05:41:09.243770263 +0800
@@ -15,7 +15,7 @@
@c The ARG is an optional argument. To be used for macro arguments in
@c their documentation (@defmac).
@macro ovar{varname}
-@r{[}@var{\varname\}@r{]}@c
+@r{[}@var{\varname\}@r{]}
@end macro

@c @dvar(ARG, DEFAULT)
@@ -23,7 +23,7 @@
@c The ARG is an optional argument, defaulting to DEFAULT. To be used
@c for macro arguments in their documentation (@defmac).
@macro dvar{varname, default}
-@r{[}@var{\varname\} = @samp{\default\}@r{]}@c
+@r{[}@var{\varname\} = @samp{\default\}@r{]}
@end macro

@c Handling the indexes with Texinfo yields several different problems.