fix setting of HOST_{PRE,SUF}FIX in case --host option is specified but --build is not (this is not recommended by autoconf but still possible)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@59905 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

configure

@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Id: configure.in 59458 2009-03-09 22:41:02Z VZ .
+# From configure.in Id: configure.in 59561 2009-03-15 16:07:56Z KO .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61 for wxWidgets 2.9.0.
 #
@@ -2536,7 +2536,7 @@ case $host_os in *\ *) host_os=`echo "$host_os" | sed 's/ /-/g'`;; esac
 
 
 
-if test "$cross_compiling" = "yes"; then
+if test "$cross_compiling" != "no"; then
     HOST_PREFIX="${host_alias}-"
     HOST_SUFFIX="-$host_alias"
 else
@@ -47052,7 +47052,7 @@ echo "$as_me: WARNING: GStreamer not available... disabling wxMediaCtrl" >&2;}
 fi
 
 
-if test "$cross_compiling" = "yes"; then
+if test "$cross_compiling" != "no"; then
         OSINFO="\"$host\""
 else
         OSINFO=`uname -s -r -m`