Fix build with precompile headers

Get the CXX compiler using $$QMAKE_CXX instead of ${QMAKE_VAR_QMAKE_CXX}
which causes shell syntax errors when combined with the silent flag.

Task-number: QTBUG-36159

Change-Id: I26cdbe788a20bd2df1aa3563694648e41c082a2c
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Update UCD source files up to Unicode 6.3.0

Change-Id: I9ab58a659af1e758b172a24aa95bce1fea89c33d
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Update the Unicode Data and Algorithms up to Unicode 6.3.0

* Mongolian and Phags-pa characters have been given a Joining_Type
  classification for contextual shaping. As a part of these additions,
  one Phags-pa character has the Joining_Type value of L (Left Joining),
  which no character had been assigned before.
* The unassigned code points in the Currency Symbols block have been
  given the Bidi_Class property value ET and the Line_Break property
  value PR, to help implementations support new currency symbols,
  when they are encoded.
* Hebrew letters and basic punctuation marks have been assigned
  the newly introduced Word_Break property values Hebrew_Letter,
  Single_Quote, and Double_Quote.
* The Bidi_Class property has been extended with four new values
  for directional isolates.
For more details, see http://www.unicode.org/versions/Unicode6.3.0/

Change-Id: Iad62d02edc58a8497898dcd6d6c70d5aece317ea
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Regenerate the Unicode data tables

Change-Id: I2288c88ccfa0c9e339f8ef140cee74a518e72b35
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Add new BiDi control characters to Unicode control character menu

Change-Id: I0e3253965b36c7c831f0212c6e55ca310a3ad6c4
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>