[gtk+/gtk-2-24] build: fix --disable-man

[Marc-Antoine Perennou <marcop src gnome org>]

commit 71b73e04d56a90c6ae2b3312727f30d5e8c75e36
Author: Marc-Antoine Perennou <Marc-Antoine Perennou com>
Date:   Fri Jul 26 13:58:21 2013 +0200

    build: fix --disable-man
    
    The third argument to AC_ARG_ENABLE is the action done when
    the argument is specified, not when it is enabled.
    This resulted in --disable-man enabling those.
    
    Signed-off-by: Marc-Antoine Perennou <Marc-Antoine Perennou com>

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index ddf8206..a21942b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1601,7 +1601,7 @@ AM_CONDITIONAL(HAVE_DOCBOOK, $DB2HTML)
 
 AC_ARG_ENABLE(man,
               [AC_HELP_STRING([--enable-man],
-                              [regenerate man pages from Docbook [default=no]])],enable_man=yes,
+                              [regenerate man pages from Docbook [default=no]])],,
               enable_man=no)
 
 if test "${enable_man}" != no; then