Qt import: Script to build everything, for Linux and Mac OS X.

http://code.google.com/p/phantomjs/issues/detail?id=226

build.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+COMPILE_JOBS=4
+
+QT_CFG=''
+
+until [ -z "$1" ]; do
+    case $1 in
+        "--qt-config")
+            shift
+            QT_CFG+=" $1"
+            shift;;
+        "--jobs")
+            shift
+            COMPILE_JOBS=$1
+            shift;;
+        "--help")
+            echo "Usage: $0 [--qt-config CONFIG] [--jobs NUM]"
+            echo
+            echo "  --qt-config CONFIG          Specify extra config options to be used when configuring Qt"
+            echo "  --jobs NUM                  How many parallel compile jobs to use. Defaults to 4."
+            echo
+            exit 0
+            ;;
+        *)
+            echo "Unrecognised option: $1"
+            exit 1;;
+    esac
+done
+
+cd src/qt && ./preconfig.sh --jobs $COMPILE_JOBS && cd ../..
+src/qt/bin/qmake
+make -j$COMPILE_JOBS