[Xcb] [PATCH 2/6] Remove second AC_PREREQ, require version 2.60

[Daniel Martin]

Remove a second AC_PREREQ and bump the required autoconf version to
2.60.

Version 2.59c was a testing release, published in April 2006. Version
2.60 was the stable release afterwards, released in June 2006.
---
 configure.ac | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/configure.ac b/configure.ac
index 59bea12..83b6820 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 # Initialize Autoconf
-AC_PREREQ(2.57)
+AC_PREREQ([2.60])
 AC_INIT([libxcb],
         1.9,
         [xcb at lists.freedesktop.org])
@@ -141,13 +141,6 @@ AC_SUBST(CWARNFLAGS)
 
 XCB_CHECK_VISIBILITY()
 
-# htmldir is not defined prior to autoconf 2.59c, so on earlier versions
-# set an equivalent value.
-AC_PREREQ([2.59c], [], [AC_SUBST([htmldir], [m4_ifset([AC_PACKAGE_TARNAME],
-	  ['${datadir}/doc/${PACKAGE_TARNAME}'],
-	  ['${datadir}/doc/${PACKAGE}'])
-])])
-
 XCB_CHECK_DOXYGEN()
 
 AC_CHECK_FUNC(getaddrinfo, [AC_DEFINE(HAVE_GETADDRINFO, 1, [getaddrinfo() function is available])], )
-- 
1.8.3.3