Issue #1650930 by mkalkbrenner, gidarai, daffie, JeroenT, murilohp, jungle, acbramley, shahankitb1982, anmolgoyal74, claudiu.cristea, klausi, super_romeo, ankithashetty, longwave, pooja saraah, sahil.goyal, mikeytown2, deviantintegral, mhavelant, elgandoz, catch, andypost, pounard, neclimdul, Damien Tournoud, Charlie ChX Negyesi, danblack, larowlan: Use READ COMMITTED by default for MySQL transactions

Issue #1650930 by mkalkbrenner, gidarai, daffie, JeroenT, murilohp, jungle, acbramley, shahankitb1982, anmolgoyal74, claudiu.cristea, klausi, super_romeo, ankithashetty, longwave, pooja saraah, sahil.goyal, mikeytown2, deviantintegral, mhavelant, elgandoz, catch, andypost, pounard, neclimdul, Damien Tournoud, Charlie ChX Negyesi, danblack, larowlan: Use READ COMMITTED by default for MySQL transactions

Issue #1040534 by catch, Owen Barton, danreb, mikeytown2, ogi, omega8cc, xjm: Rewrite rules for gzipped CSS and JavaScript aggregates cause lots of lstats for files that will never exist

Issue #1014086 by catch, nod_, martin107, quietone, dww, mariacha1, Spokje, yogeshmpawar, pounard, Wim Leers, mfer, mikeytown2, mbutcher, moshe weitzman, Fabianx, borisson_, alexpott, donquixote, sun, andypost, dawehner: Stampedes and cold cache performance issues with css/js aggregation

Issue #2672088 by joelpittet, daffie, catch, dawehner, mikeytown2: Add static cache to DatabaseConnection ::escapeDatabase(), ::escapeTable(), ::escapeField() and ::escapeAlias()

Issue #1377740 by jbrown, bvanmeurs, catch, anrikun, Jorrit, rpayanm, mvc, mikeytown2, chx: file_unmanaged_move() should issue rename() where possible instead of copy() & unlink()

Issue #1443308 by cilefen, joseph.olstad, mikeytown2, joelpittet, btopro, alexpott, marcingy, jonhattan, stewsnooze, tstoeckler, penyaskito: Add static cache to module_load_include()

Issue #1443342 by joseph.olstad, mikeytown2, xjm, joelpittet, brianV, effulgentsia: Inline file_uri_scheme() in file_stream_wrapper_uri_normalize() and other file.inc functions

Issue #972528 by mkalkbrenner, harijari, ryanissamson, mikeytown2, haripalrao, kasperg: dblog fails to log MAX_ALLOWED_PACKET errors because they're longer than MAX_ALLOWED_PACKET

Issue #1081266 by stefan.r, mikeytown2, jeroen.b, tsphethean, mfb, joseph.olstad, marcelovani: Avoid re-scanning module directory when a filename or a module is missing

Issue #779482 by mikeytown2, sun, cam8001, dalin, segi, alexpott, Sweetchuck, jbrown: Installation failure when opcode cache is enabled.

Issue #1447736 by rbayliss, mikeytown2, effulgentsia, kim.pepper, Fabianx, boombatower: Adopt Guzzle library to replace drupal_http_request().

Issue #1209532 by timmillwood, lucascaro, wiifm, mikeytown2, slashrsm: Count node views via AJAX in the statistics module.

- Patch #7881 by pwolanin, mikeytown2, gwynnebaer, Patrizio, sylus, effulgentsia: add support to drupal_http_request() for proxy servers.

- Patch #7881 by mikeytown2, gwynnebaer, Patrizio, sylus, effulgentsia: add support to drupal_http_request() for proxy servers.

- Patch #156582 by c960657, pwolanin, townxelliot, Damien Tournoud, kbahey, mikeytown2, drico, jpmckinney: drupal_http_request() should support timeout setting.

- Patch #444228 by Tri, raulgigea, mikeytown2, JohnAlbin: optimize CSS option causes php cgi to segfault in pcre function 'match'.

- Patch #276615 by mikeytown2: only clear the CSS cache when submitting the form, not when displaying the form.