coder_upgrade.other.inc: Grammar Parser changes: T_RETURN statements changed from array to PGPExpression, body statements changed from PGPList to PGPBody.

Refactor: move functions from main to list, module to main; improve on setting module name; change debug echo to print; use second person tense in document comments.

Refactor upgrade routines for drupal_http_request, format_plural, module_invoke, t, taxonomy_get_tree and theme function calls.

Add documentation examples of using grammar parser API functions; Rename PGPFunctionCall2 to PGPFunctionCall; Upgrade module_invoke with respect to taxonomy_get_tree.