Incremental improvement to pdd07 "coding standards":  * Prefer "char *p" to "char* p".  * Prefer that structures have both tags and typedefs.  * Add "Portability" and "Defensive programming" sections.
Incremental improvement to pdd07 "coding standards":
 * Prefer "char *p" to "char* p".
 * Prefer that structures have both tags and typedefs.
 * Add "Portability" and "Defensive programming" sections.



git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@15527 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot