porting nc_test

[Jianwei Li]

>>I've been working on compiling netcdf's nc_test program against our
>>library.  
>>
>>There are two calls in the serial netcdf library used by nc_test for
>>which i cannot find any parallel-netcdf analog
>>
>>nc_put_vara_text
>>nc_get_var1_text
>>
>
>"text" data type has not been added to parallel-netcdf implementation yet.
>Currently, there is only short, int, float, double data type support.

I'm adding these functions to it now and will commit my 
implementation to the cvs tonight.

Jianwei