qt4: fix compile error in Qt 4.8.0 with gcc 4.6

Ensure the Qt configure script can can detect the compiler correctly as
g++. This fixes the following compile error with gcc 4.6:

./wtf/NullPtr.h:48:1: error: identifier 'nullptr' will become a keyword in C++0x [-Werror=c++0x-compat]

(From OE-Core rev: f29bb5b2a99ecef46e5570bf3336e9680c0b6705)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-qt/qt4/qt-4.8.0.inc

@@ -14,6 +14,7 @@ SRC_URI = "http://get.qt.nokia.com/qt/source/qt-everywhere-opensource-src-${PV}.
            file://fix-translations.patch \
            file://add_nostrip_for_debug_packages.diff \
            file://qmake_cxx_eval.patch \
+           file://configure_oe_compiler.patch \
            file://g++.conf \
            file://linux.conf \
            "

meta/recipes-qt/qt4/qt-4.8.0/configure_oe_compiler.patch

@@ -0,0 +1,31 @@
+Ensure we identify the compiler as g++ in configure
+
+Our PLATFORM in OE is ${TARGET_OS}-oe-g++, and previously the configure
+script was interpreting from this that the compiler was "oe-g++" and thus
+g++ specific checks were not being run since this string did not match;
+among other things this resulted in a compiler version check in the
+QtWebKit build code not working, and hence the following error at build
+time:
+
+./wtf/NullPtr.h:48:1: error: identifier 'nullptr' will become a keyword in C++0x [-Werror=c++0x-compat]
+
+The easiest thing since our PLATFORM is entirely artificial is to just
+force COMPILER to "g++" in the configure script if it is detected as
+"oe-g++".
+
+Upstream-Status: Inappropriate [configuration]
+
+Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
+
+--- qt-everywhere-opensource-src-4.8.0.orig/configure
++++ qt-everywhere-opensource-src-4.8.0/configure
+@@ -7444,6 +7444,9 @@ elif [ "$XPLATFORM" != "$PLATFORM" ]; th
+ else
+     COMPILER=`echo $PLATFORM | cut -f 2- -d-`
+ fi
++case $COMPILER in
++    *oe-g++) COMPILER="g++" ;;
++esac
+ if [ "$CFG_EXCEPTIONS" = "unspecified" -a "$PLATFORM_QWS" = "yes" ]; then
+     CFG_EXCEPTIONS=no
+ fi

meta/recipes-qt/qt4/qt4-embedded_4.8.0.bb

@@ -1,7 +1,7 @@
 require qt-${PV}.inc
 require qt4-embedded.inc
 
-PR = "${INC_PR}.0"
+PR = "${INC_PR}.1"
 
 DEFAULT_PREFERENCE = "-1"