Documentation/mono.txt: convert to ReST markup

- Fix document title;
- use quote blocks where needed;
- use .. note:: for notes;
- use monotonic fonts for config options and file names;
- adjust whitespaces and blank lines;
- add it to the user's book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/mono.txt

-               Mono(tm) Binary Kernel Support for Linux
-               -----------------------------------------
+Mono(tm) Binary Kernel Support for Linux
+-----------------------------------------
 
 To configure Linux to automatically execute Mono-based .NET binaries
 (in the form of .exe files) without the need to use the mono CLR
@@ -19,22 +19,22 @@ other program after you have done the following:
 	http://www.go-mono.com/compiling.html
 
    Once the Mono CLR support has been installed, just check that
-   /usr/bin/mono (which could be located elsewhere, for example
-   /usr/local/bin/mono) is working.
+   ``/usr/bin/mono`` (which could be located elsewhere, for example
+   ``/usr/local/bin/mono``) is working.
 
 2) You have to compile BINFMT_MISC either as a module or into
-   the kernel (CONFIG_BINFMT_MISC) and set it up properly.
+   the kernel (``CONFIG_BINFMT_MISC``) and set it up properly.
    If you choose to compile it as a module, you will have
    to insert it manually with modprobe/insmod, as kmod
    cannot be easily supported with binfmt_misc.
-   Read the file 'binfmt_misc.txt' in this directory to know
+   Read the file ``binfmt_misc.txt`` in this directory to know
    more about the configuration process.
 
-3) Add the following entries to /etc/rc.local or similar script
-   to be run at system startup:
+3) Add the following entries to ``/etc/rc.local`` or similar script
+   to be run at system startup::
 
-# Insert BINFMT_MISC module into the kernel
-if [ ! -e /proc/sys/fs/binfmt_misc/register ]; then
+    # Insert BINFMT_MISC module into the kernel
+    if [ ! -e /proc/sys/fs/binfmt_misc/register ]; then
         /sbin/modprobe binfmt_misc
 	# Some distributions, like Fedora Core, perform
 	# the following command automatically when the
@@ -43,24 +43,26 @@ if [ ! -e /proc/sys/fs/binfmt_misc/register ]; then
 	# Thus, it is possible that the following line
 	# is not needed at all.
 	mount -t binfmt_misc none /proc/sys/fs/binfmt_misc
-fi
+    fi
 
-# Register support for .NET CLR binaries
-if [ -e /proc/sys/fs/binfmt_misc/register ]; then
+    # Register support for .NET CLR binaries
+    if [ -e /proc/sys/fs/binfmt_misc/register ]; then
 	# Replace /usr/bin/mono with the correct pathname to
 	# the Mono CLR runtime (usually /usr/local/bin/mono
 	# when compiling from sources or CVS).
         echo ':CLR:M::MZ::/usr/bin/mono:' > /proc/sys/fs/binfmt_misc/register
-else
+    else
         echo "No binfmt_misc support"
         exit 1
-fi
+    fi
 
-4) Check that .exe binaries can be ran without the need of a
-   wrapper script, simply by launching the .exe file directly
-   from a command prompt, for example:
+4) Check that ``.exe`` binaries can be ran without the need of a
+   wrapper script, simply by launching the ``.exe`` file directly
+   from a command prompt, for example::
 
 	/usr/bin/xsd.exe
 
-   NOTE: If this fails with a permission denied error, check
-         that the .exe file has execute permissions.
+   .. note::
+
+      If this fails with a permission denied error, check
+      that the ``.exe`` file has execute permissions.