Fix clang build for libc++

Successfully builds Qt 5.2 with:

QMAKE_CXXFLAGS_CXX11 += -std=c++11 -stdlib=libc++
QMAKE_LFLAGS_CXX11   += -stdlib=libc++ -lc++abi

against:

clang version 3.3 (tags/RELEASE_33/final)

Change-Id: I778f9410c6563e78bc77ae4c20097fa561503ba1
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
WinRT: Added missing WIN32 define to qmake.conf

Without that define here moc cannot handle qsystemdetection
properly. While having to touch the mkspecs I also removed
the no longer needed WINRT define.

Change-Id: I0609bd173c7bc14ccdd862afc777d7793dda02b8
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Reviewed-by: Andrew Knight <andrew.knight@digia.com>
WinRT: Fix various test compilations

- Remove irrelevant test subdirs via .pro files
- Follow WinCE codepaths where applicable
- Replace unsupported Win32 APIs with WinRT equivalents

This does not aim to fix any failures in the tests themselves; it only
makes them compile.

Change-Id: Ia82bc0cc402891f8f6238d4c261ee9152b51be80
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Winrt: tst_qthread: Added QEXPECT_FAIL where needed

Change-Id: I88d98421978e0f5c55af8647f3f74c265b45bd37
Reviewed-by: Andrew Knight <andrew.knight@digia.com>
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@digia.com>
Winrt: Skip qthread autotests, which are not supported (yet)

Change-Id: Ib1047731667ba8a7b9db2f62924eb42a6b85b4fd
Reviewed-by: Andrew Knight <andrew.knight@digia.com>
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@digia.com>
ANGLE: Support WinRT

This enables EGL for WinRT's native types, and adjusts some codepaths
to accommodate differences in between desktop Windows and WinRT.

- WinRT native handles added to eglplatform.h
- References to native handles in libEGL/libGLESv2 follow eglplatform.h
- D3D 11.1 structures and methods used when necessary
- TLS replaced with thread attribute
- LocalAlloc/Free replaced with Heap API

Change-Id: Ia90377e700d335a1c569c2145008dd4b0dfd84d3
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Windows RT and Windows Phone QPA

Change-Id: I6ab8af31f73439172e43fb709831821482b1cc99
Done-with: Kamil Trzcinski
Done-with: Oliver Wolff
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
QBrush: use a 3D array instead of pointer tables to save 28 relocs in QtGui

Change-Id: I4695a053fa5f455075ddda209791904f98ba7149
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>