Clean icore.h.

Reviewed-by: con

Reviewed-by: ck

Reviewed-by: con

This happens because the may have a different name (like it's frament)
which we now look for while parsing the html for the function name.

Task-number: QTCREATORBUG-2217
Reviewed-by: ck

Should have been done earlier. 2.1.80 was burned in the pre-2.1.0->2.0.1
days, and we'd like to have odd subminor for 'working' and even subminor
numbers for pure cherry-picking release branches anyway.

Task-number: QTCREATORBUG-2080
Reviewed-by: ck

Task-number: QTCREATORBUG-2326

Task-number: QTCREATORBUG-2335

Fix README, some spelling errors, remove contractions,
exclamation marks, correct some plural forms, join split messages.
Add QCoreApplication::translate to non-Q_OBJECT-classes.
Fix some lupdate warnings about discarding meta-data (//:).

Merge-request: 172
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>

 * Fix all warnings about non-explicit constructors except for those
   in 3rdparty code.

Task-number: QTCREATORBUG-2074

Task-number: QTCREATORBUG-347
Reviewed-by: ck

Task-number: QTCREATORBUG-2130