Support "--enable-modules=none" to build an httpd binary with 

no optional modules enabled.

--- httpd-2.1.10/acinclude.m4.disablemods

+++ httpd-2.1.10/acinclude.m4

@@ -289,14 +289,19 @@

   AC_ARG_ENABLE(modules,

   APACHE_HELP_STRING(--enable-modules=MODULE-LIST,Space-separated list of modules to enable | "all" | "most"),[

-    for i in $enableval; do

-      if test "$i" = "all" -o "$i" = "most"; then

-        module_selection=$i

-      else

-        i=`echo $i | sed 's/-/_/g'`

-        eval "enable_$i=yes"

-      fi

-    done

+    if test "$enableval" = "none"; then

+       module_default=no

+       module_selection=none

+    else

+      for i in $enableval; do

+        if test "$i" = "all" -o "$i" = "most"; then

+          module_selection=$i

+        else

+          i=`echo $i | sed 's/-/_/g'`

+          eval "enable_$i=yes"

+        fi

+      done

+    fi

   ])

   AC_ARG_ENABLE(mods-shared,