Old fixes for C target generation templates and runtime source code

[stephengaito]

Terence,

Now that your contribution system is significantly easier and clearer (many thanks) I am issuing a pull request on some patches I made about 5-6 months ago.

I have just merged them into the antlr/antlr3/master branch with out any conflicts.

These patches fix a number of release-phase errors in the files uploaded when you switched over to using GitHub. I have made one patch per branch in my fork (should you want more details).

The patches are (taken from each commit message):

1. fix for C target antlr3commontree::setParent -- currently it sets the parent's parent but we want the parent itself.
2. C.stg template in antlr v3.4 as released has all references to FOLLOW_set_in commented out - BUT the corresponding template on gitHub shows no changes to this section of code from before the v3.4 release -- making the gitHub C.stg reflect the v3.4 released version.
3. fix for noRewrite template invocation missing arguments in ASTTreeParser.stg file
4. C.stg template in antlr v3.4 as released uses NULL for null entries in the dfa _transitions table - BUT the corresponding template on gitHub shows no changes to this section of code from before the v3.4 release -- making the gitHub C.stg reflect the v3.4 released version
5. fix for Anonymous template missing single argument in the creation of stream_XXX->free code in the ASTTreeParser.stg file

I signed the contributors.txt file on 2012/09/21

Regards,

Stephen Gaito

[parrt]

Hi. trying to clean up. Can you look at this changs again with respect to new antlr/antlr3 master? thanks!