Access to string with raw texinfo help string

[John W. Eaton]

On 14-Jan-2007, David Bateman wrote:

| For the translation project in octave-forge there is a need to write a
| language specific help function that uses the translated help if it is
| available. However, it also needs the original help string to allow the
| MD5 sum of the help string to be compared against the one that was used
| in the translation. Finally, for translations of the help of optional
| packages it also needs to know if the symbol is found at all.
| 
| I'd therefore like to propose the attached patch that basically is the
| same logic as the existing help function, but outputs the raw help text
| as a string. With this we'll be able to package the pt_BR language
| translations of octave and get the system to work as it should...

OK, I checked in a variation on these changes that modifies the
existing help functions to use the raw_ versions.

Thanks,

jwe