Add some missing STL typedefs and functions to QStringRef and QByteArray

These will be needed in some template code that is to come.

Change-Id: I5b93f4320313f7b15a6404de2c98f85485735fda
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
Fix the docs for resizeGL in QOpenGLWindow

Some of it was blindly copied from QOpenGLWidget and it
does not apply.

Change-Id: I73f358f74d286d3757a3a77a9bfe06887d57514a
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
Add default format to QSurfaceFormat

Add defaultFormat() and setDefaultFormat() statics to QSurfaceFormat.
These define the default values for the requestedFormat members of
QOpenGLContext, QWindow and QOpenGLWidget (and implicitly QOpenGLWindow,
QQuickWindow, etc.)

This replaces QQuickWindow::setDefaultFormat() which can now be removed.

The main inspiration here is not the convenience (avoiding setFormat() calls
for all windows/widgets), but robustness: by setting the format once at the start
of the application, all windows and contexts, including the internal share context
used by QOpenGLWidget and QQuickWidget, will use the same format, eliminating
the possibility of failing due to trying to share between incompatible contexts.

Furthermore, since such a functionality is anyway mandatory for QQuickWindow
(due to the possibility of creating windows from QML code), extending it to
QSurfaceFormat and QOpenGLContext/QWindow is the next logical step.

Change-Id: Ie94486adc489d17fecfcebb7050fecedffd2688b
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
Add support for glMapBufferRange in the wrappers and resolvers

QOpenGLBuffer::map() and related helpers are becoming useless in
OpenGL ES 3.0 and up: instead of the old GL_OES_map_buffer,
glMapBufferRange, but not glMapBuffer, is now part of the standard.
On desktop GL_ARB_map_buffer_range is present by default in OpenGL 3.0
and newer.

[ChangeLog][QtGui] Added QOpenGLBuffer::mapBufferRange().

Task-number: QTBUG-38168
Change-Id: I4e9bbe8ced9ee4d535ac32849a8c08c26d79cb49
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
OS X: Remove mnemonics in parentheses

In some language, mnemonics put after label text within parentheses.
e.g. "&Open" is translated to "開く(&O)" in Japanese.

OS X doesn't use mnemonics and '&' in label text is removed.
Mnemonics in parentheses (and spaces before them) also should be removed.

Change-Id: I88c0a1f60af7e148b3cf24a4e215ce807d62bce3
Reviewed-by: Tasuku Suzuki <stasuku@gmail.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Fix compilation after qstringlist.h stopped including qdatastream.h

Change-Id: Ida09e794262dce78cd5169aac56b610fabc9082c
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Fix int conversion to string

clang warning: adding 'int' to a string does not append to the string

Change-Id: I6dc393269a52e9482fde106c17132336cf5ce226
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
Fix crash in QOpenGLWidget when changing the TLW

The documentation was also somewhat incomplete when it comes to
widgets that change their tlw multiple times.

Change-Id: I09dd70167804c50a5283ab3709162c93a3827e9b
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>