testing/qt5-*: upgrade to 5.2.1, fix musl build

testing/qt5-qtbase/APKBUILD

testing/qt5-qtbase/qt-musl-iconv-no-bom.patch

testing/qt5-qtbase/qt-musl-socklen.patch

testing/qt5-qtdeclarative/APKBUILD

testing/qt5-qtgraphicaleffects/APKBUILD

testing/qt5-qtimageformats/APKBUILD

testing/qt5-qtjsbackend/APKBUILD

testing/qt5-qtmultimedia/APKBUILD

testing/qt5-qtquick1/APKBUILD

testing/qt5-qtquickcontrols/APKBUILD

testing/qt5-qtscript/APKBUILD

testing/qt5-qtsvg/APKBUILD

testing/qt5-qttools/APKBUILD

testing/qt5-qttranslations/APKBUILD

testing/qt5-qtwebkit/APKBUILD

testing/qt5-qtwebkit/bison3.patch

testing/qt5-qtwebkit/fix-execinfo.patch

testing/qt5-qtwebkit/fix-rpath.patch