temporary fix: BeOS only has 'which' as an alias to a shell func :^)

btw, someone should indent this mess =) (maybe I'll do)

Originally committed as revision 1606 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -561,11 +561,13 @@ int main( void ) { return (int) FT_Init_FreeType(0); }
 EOF
 
 freetype2=no
-which freetype-config > /dev/null
-if test $? -eq 0; then
+if test "x$targetos" != "xBeOS"; then
+  which freetype-config > /dev/null
+  if test $? -eq 0; then
     if $cc -o $TMPE $TMPC `freetype-config --cflags` `freetype-config --libs`  2> /dev/null ; then
-    freetype2=yes
+      freetype2=yes
     fi
+  fi
 fi
 
 if test x"$1" = x"-h" -o x"$1" = x"--help" ; then