[PATCH util-macros] XORG_ENABLE_DOCS: Fix "Enable building the documentation (yes: yes)"

[Gaetan Nadon]

The quoting did not prevent the m4 defined variable "default"
to replace the text string "default" in the help text.

Signed-off-by: Gaetan Nadon <memsize at videotron.ca>
---
 xorg-macros.m4.in |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/xorg-macros.m4.in b/xorg-macros.m4.in
index c7dbd41..fe29881 100644
--- a/xorg-macros.m4.in
+++ b/xorg-macros.m4.in
@@ -811,12 +811,12 @@ AM_CONDITIONAL([HAVE_PS2PDF], [test "$have_ps2pdf" = yes])
 # parm1:	specify the default value, yes or no.
 #
 AC_DEFUN([XORG_ENABLE_DOCS],[
-m4_define([default], m4_default([$1], [yes]))
+m4_define([docs_default], m4_default([$1], [yes]))
 AC_ARG_ENABLE(docs,
 	AS_HELP_STRING([--enable-docs],
-	   [Enable building the documentation (default: ]default[)]),
-	   [build_docs=$enableval], [build_docs=]default)
-m4_undefine([default])
+	   [Enable building the documentation (default: ]docs_default[)]),
+	   [build_docs=$enableval], [build_docs=]docs_default)
+m4_undefine([docs_default])
 AM_CONDITIONAL(ENABLE_DOCS, [test x$build_docs = xyes])
 AC_MSG_CHECKING([whether to build documentation])
 AC_MSG_RESULT([$build_docs])
-- 
1.6.0.4