fix option

png/png.spec

@@ -33,7 +33,7 @@ Class:        BASE
 Group:        Graphics
 License:      BSD
 Version:      1.2.15
-Release:      20070105
+Release:      20070112
 
 #   list of sources
 Source0:      http://switch.dl.sourceforge.net/sourceforge/libpng/libpng-%{version}.tar.gz
@@ -77,7 +77,7 @@ AutoReqProv:  no
     GREP="grep" \
     ./configure \
         --prefix=%{l_prefix} \
-        --man=%{l_prefix}/man \
+        --mandir=%{l_prefix}/man \
         --with-libpng-compat \
         --disable-shared
     %{l_make} %{l_mflags -O}