Made some basic build instructions for Symbian on Linux.

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+How to build Qt for Symbian using the Linux makespec.
+
+Prerequisites:
+
+  - Working RVCT 2.2 native Linux compiler. The new publicly
+    available RVCT 4.0 compiler may work, but it hasn't been tested
+    yet.
+
+  - A working GnuPoc environment. See this page for details:
+    http://www.martin.st/symbian/. The part about Wine setup I didn't
+    have to do, but Wine does need to be available.
+
+Compiling:
+
+ 1. First a few environment variables need to be set:
+
+        export RVCT22INC=<s60-root>/Epoc32/include
+        export RVCT22INC=$RVCT22INC,<s60-root>/Epoc32/include/rvct2_2
+        export RVCT22INC=$RVCT22INC,<s60-root>/Epoc32/include/variant
+        export RVCT22INC=$RVCT22INC,<s60-root>/Epoc32/include/stdapis
+        export RVCT22INC=$RVCT22INC,<s60-root>/Epoc32/include/stdapis/stlport
+        export RVCT22LIB=<s60-root>/Epoc32/release/armv5/lib
+        export PATH=$PATH:<s60-root>/Epoc32/tools
+        export PATH=$PATH:<qt-root>/bin
+
+    Replace the s60-root with the installation directory of your SDK,
+    and the qt-root with the root of your Qt repository.
+    These are good candidates for putting in a script somewhere.
+
+ 2. Run configure. It needs a bit more switches than usual, so here's
+    the full line:
+
+        ./configure -developer-build -platform linux-g++ -xplatform \
+            symbian/linux-armcc -little-endian -host-little-endian \
+            -arch symbian
+
+ 3. Compile the host tools. This unfortunately does not happen
+    automatically.
+
+        cd src/tools
+        for i in bootstrap moc rcc uic; do make -C $i; done
+
+ 4. Compile QtCore.dll:
+
+        cd ../corelib
+        qmake -platform symbian/linux-armcc
+        make
+
+    and then wait for a while.
+
+ 5. Compile some helloworld application (I leave the details to you
+    ;-)
+
+        qmake -platform symbian/linux-armcc
+        make
+
+ 6. Package and run on the phone. This is unfortunately a bit of a
+    manual step at the moment. Your best bet is to look at a Windows
+    build of the same application, and manually grab the .rsc files
+    that it refers to and put them in the application directory on
+    Linux. Then you can take the pkg_template.pkg file provided in
+    the repository and tweak it to include the files you want. Note
+    that due to limitations on how the makesis tool interprets file
+    paths, all the files included need to be in the current directory
+    (or a link from there).
+
+    Assuming that all the files are in place, do this:
+
+        cp <qt-root>/src/s60installs/selfsigned.* .
+        winewrapper makesis.exe MyApp.pkg MyApp_unsigned.sis
+        winewrapper signsis.exe MyApp_unsigned.sis MyApp.sis \
+            selfsigned.cer selfsigned.key
+
+ 7. Enjoy QObjects and "hello world" on the phone!