Android: Fix crash in String.replace() in release builds

When enabling optimizations in the compiler, it produces bogus
code for the regExp->value deref in the line

nMatchOffsets += regExp->value->captureCount() * 2

This is a random refactoring to work around the compiler bug.
The only line that actually needs to be touched is the one mentioned
above, but I replaced all uses of regExp->value so that it
wouldn't look too weird.

Task-number: QTBUG-38692
Change-Id: Ib33a523a86ce51ebc6c7095a803fedaebcaa8e63
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Update qmltypes files

Additionally, fixes some revisioning errors which a manual inspection
of the qmltypes files diffs revealed.

-mipmapChanged signal is new
-windowTitleChanged signal is new
-Matrix4x4 made 5.3, but was revisioned for 5.4

Task-number: QTBUG-29806
Change-Id: I4cb8bca6ac6fe8040871734c88aabcd392c1d696
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
Fix crash on host/target word size mismatches

When compiling on a 64-bit host and using the QV4::CompileData on a 32-bit
target, the size of QArrayData is different. Therefore we cannot use it in
the QV4::CompiledData and have to resort to storing only the characters in
there. We can at least still use fromRawData when extracting strings, but the
QStringData will have to be allocated now.

Change-Id: Ia9dab1722ed72186451b65ba74457051c6ce3155
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Fix QJSEngine::evaluate using the wrong execution context

In contrary to what the documentation says, QJSEngine in Qt 5.x executes
in the context of the global object (QScriptIsolate always called enter
on the QV8Engine's "root" context, thus making it current). The v4
implementation unfortunately did what the documentation said and used
the current context, which is wrong in many ways. For example it completely
breaks the optimization of stack allocated contexts, because when a C++
callback is called from within a JS function with a stack allocated context
and that C++ code calls QJSEngine::evaluate and creates new closures, the
stack context would become an outter context and cause crashes during GC.

This patch restores the behavior of Qt 5.0/5.1 and fixes the documentation.

Task-number: QTBUG-38530
Change-Id: Ie6481f02e676954cc94b188a1c87c88e7c56dafa
Reviewed-by: Lars Knoll <lars.knoll@digia.com>