configure --with-netCDF: set default=no

ChangeLog

@@ -5,6 +5,7 @@
 
 2014-03-24  Uwe Schulzweida
 
+	* configure --with-netCDF: set default=no
 	* gribapiDefDateTimeRel: set vdate to rdate for time invariant fields [Bug #4641]
 
 2014-03-20  Uwe Schulzweida

configure

@@ -1571,7 +1571,7 @@ Optional Packages:
   --with-hdf5=<yes|no|directory> (default=no)
                           location of hdf5 library, NETCDF4 requires hdf5 high
                           level interface
-  --with-netcdf=<yes|no|directory> (default=yes)
+  --with-netcdf=<yes|no|directory> (default=no)
                           location of netcdf library (lib and include subdirs)
   --with-jasper=<directory>
                           Specify location of JASPER library. You must specify

m4/acx_options.m4

@@ -142,7 +142,7 @@ ENABLE_NETCDF=no
 ENABLE_NC2=no
 ENABLE_NC4=no
 AC_ARG_WITH([netcdf],
-            [AS_HELP_STRING([--with-netcdf=<yes|no|directory> (default=yes)],[location of netcdf library (lib and include subdirs)])],
+            [AS_HELP_STRING([--with-netcdf=<yes|no|directory> (default=no)],[location of netcdf library (lib and include subdirs)])],
             [AS_CASE(["$with_netcdf"],
                      [no],[AC_MSG_CHECKING([for netcdf library])
                            AC_MSG_RESULT([suppressed])],