Issue #1539940 by jwilson3, infiniteluke, mrf, ryanissamson: Fix up README files to encourage good placement of themes, modules, and profiles

Issue #22336 by quicksketch, scor, boombatower, and rfay. Move all core Drupal files under a core subdirectory.

Issue #342350 by Deciphered: Fixed Override template files based on template filename as well as hook name.

- Patch #999040 by Niklas Fiekas: corrected alternative control structure syntax in theme templates.

- Patch #1162802 by Liam Morland: Asterisk * used for required or changed marker should be in abbr not span.

Issue #961584 by james.elliott, mgifford, ximo: Fixed 'Skip to main content' link doesn't work in Overlay for Bartik or Stark.

- Patch #1164828 by tim.plunkett: color labels are not intuitive when searching for the keyword “background”.

- Patch #1164792 by tim.plunkett: when attempting to change blue to another color, users often change the first item on the list.

- Patch #1017832 by benjifisher, droplet, aspilicious, tim.plunkett, johnv, Jeff Burnz: fieldset CSS for node forms needs to be more specific.

- Patch #876282 by tim.plunkett, amateescu: small layout glitch on 'Password match' line during installation.

- Patch #1150340 by aspilicious: CSS gradient background doesn't work with newest opera and IE versions.

- Patch #1110810 by JohnAlbin, TR: CVS $ tag lurks in .htaccess file (and other dank corners of Drupal).