Add toBytes() and BufferProtocol

VoidPtr:
Add toBytes() method that return a char* representation
of the void* pointer.

QByteArray:
The current implementation only provided the Buffer Protocol
for Python2, this patch includes the getbuffer implementation
for Python3.

Having a BufferProtocol implementation for Python3 allows the
initialization of VoidPtr to get access to the internal content,
so one can go back and forward with the representation of it:

    ba = QByteArray(b"Hello World")
    vp = VoidPtr(ba, ba.size())
    vp.toBytes() # b"Hello World"

The BufferProtocol was also changed for Python2 including the new
buffer protocol (Py_TPFLAGS_HAVE_NEWBUFFER) function `bf_getbuffer`.

A test case was included.

Fixes: PYSIDE-934
Change-Id: I8936966da91b2dcc879c582cfc35e6a35f7a60b6
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

0 files changed, 0 insertions, 0 deletions