Doc: Add information about the installers from Qt Project.

The installers are summarized in a table. The platform pages have links
to the installer page.

Change-Id: Iee2f98556f498118cc4055bf7fc8e6d346db8d69
Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>
Reviewed-by: Topi Reiniö <topi.reinio@digia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>

doc/src/getting-started/installation.qdoc

@@ -46,7 +46,9 @@ for your platform from the following list.
 \tableofcontents
 
     Qt for X11 has some requirements that are given in more detail
-    in the \l{Qt for X11 Requirements} document.
+    in the \l{Qt for X11 Requirements} document. A binary package is available
+    and the \l{Qt Installation Program} page describes the installation in more
+    detail.
 
 \section1 Step 1: Installing the License File (commercial editions only)
     If you have the commercial edition of Qt, install your license
@@ -154,13 +156,10 @@ for your platform from the following list.
 
 \tableofcontents
 
-    Qt for Windows has some requirements that are given in more detail
-    in the \l{Qt for Windows Requirements} document.
-
-    If you have obtained a binary package for this platform,
-    consult the installation instructions provided instead of the ones in
-    this document.
-
+    Qt for Windows has some requirements that are given in more detail in the
+    \l{Qt for Windows Requirements} document. A binary package is available and
+    the \l{Qt Installation Program} page describes the installation in more
+    detail.
 
 \section1 Step 1: Install the License File (commercial editions only)
 
@@ -287,6 +286,8 @@ Qt for Mac OS X has some requirements that are given in more detail
 in the \l{Qt for Mac OS X Requirements} document.
 
 The following instructions describe how to install Qt from the source package.
+A binary package is available and the \l{Qt Installation Program} page describes
+the installation in more detail.
 
 For the binary package, simply double-click on the Qt.mpkg
 and follow the instructions to install Qt. You can later run the \c{uninstall-qt.py}

doc/src/getting-started/installer-README.qdoc

@@ -65,6 +65,47 @@ the installation program to complete the installation.
 Use the Maintenance Tool under \e{<install_dir>} to remove all installed
 components.
 
+\section2 Platform Installers
+
+Several installers exist for targeting different platforms. The table below
+summarizes the available installers.
+
+    \table
+    \header
+        \li Installer
+        \li Target
+    \row
+        \li Linux (32-bit and 64-bit)
+        \li As provided by Ubuntu
+    \row
+        \li Apple Mac OS X 10.7 and Mac OS X 10.8
+        \li Clang as provided by Apple
+    \row
+        \li Microsoft Windows 7 (32-bit) ANGLE
+        \li MSVC 2010 SP1
+    \row
+        \li Microsoft Windows 7 (32-bit) OpenGL
+        \li MSVC 2010 SP1
+    \row
+        \li Microsoft Windows 7 (32-bit)
+        \li MinGW-builds gcc 4.8.0 (32-bit)
+    \row
+        \li Microsoft Windows 8 (32-bit and 64-bit) ANGLE
+        \li MSVC 2012 SP2
+    \row
+        \li Microsoft Windows 8 (64-bit) OpenGL
+        \li MSVC 2012 SP2
+    \row
+        \li Android Linux 32-bit host installer
+        \li x86, ARMv5, ARMv7 Android targets
+    \row
+        \li Android Linux 64-bit host installer
+        \li x86, ARMv5, ARMv7 Android targets
+    \row
+        \li Android Windows 32-bit host installer
+        \li x86, armv5, armv7 Android targets
+    \endtable
+
 \section1 Starting Development Tools
 
 You can start Qt Creator directly after the installation by selecting the option

doc/src/platforms/supported-platforms.qdoc

@@ -379,13 +379,11 @@
     \section1 Availability of Binary Installation Packages
 
     The Qt Project provides binary Qt installation packages for all of the
-    reference platforms.
+    reference platforms from \l{http://qt-project.org/downloads}. The site
+    provides download links for all supported development platforms.
 
-    To develop with Qt on other supported platforms, you need to build it from
-    source.
-
-    Fore more information about the platforms Qt runs on, and the compilers used
-    on each platform, see the \l{Platform and Compiler Notes} page.
+    The \l{Qt Installation Program} page has more information about the
+    installers.
 
     \section1 General Legal Disclaimer