[pdd] Applied changes recommended by Allison Randal on parrot-porters. Namely:  - Removed ticket concerning non-C89 assumptions in Parrot  - Updated how XXX and RT tickets are used in the Parrot source  - Removed the section on Subsystems and APIs  - Corrected names with Perl or PERL in which should have been Parrot or    PARROT  - Removed the section on .sym files
[pdd] Applied changes recommended by Allison Randal on parrot-porters.
Namely:
 - Removed ticket concerning non-C89 assumptions in Parrot
 - Updated how XXX and RT tickets are used in the Parrot source
 - Removed the section on Subsystems and APIs
 - Corrected names with Perl or PERL in which should have been Parrot or
   PARROT
 - Removed the section on .sym files



git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@21316 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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