BUG#27769 - MySQL should include debian packaging dir

Replaced hardcoded sover reference with variable.
Removed references to added manpages.
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BUG#27769 
Cleaned up some things to make building the packages go a little smoother. 
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debian/rules really does need to be called from the source root.
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Fixed two problems with the build caused by adding debian to the source tree
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Left off the debian/ prefix to the Makefile filter.
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BUG#27769 - MySQL should include debian packaging dir
Changed substitution variables to match already existing autoconf vars.
Generate debian/control and debian/defs.mk from autoconf now, since we run that
to make a source package. 
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Corrected incorrect variable name
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Renamed template files to have shorter names. 
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Moved generation of debian/control to dist-hook so make clean won't eat it.
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A few final changes to make debs build from a source tarball dist.

debian/mysql-server-BASE.mysql-server.logrotate.in

@@ -0,0 +1,28 @@
+# - I put everything in one block and added sharedscripts, so that mysql gets 
+#   flush-logs'd only once.
+#   Else the binary logs would automatically increase by n times every day.
+# - The error log is obsolete, messages go to syslog now.
+/var/log/mysql.log /var/log/mysql/mysql.log /var/log/mysql/mysql-slow.log {
+	daily
+	rotate 7
+	missingok
+	create 640 mysql adm
+	compress
+	sharedscripts
+	postrotate
+		test -x /usr/bin/mysqladmin || exit 0
+
+		# If this fails, check debian.conf! 
+		export HOME=/etc/mysql/my.cnf
+		MYADMIN="/usr/bin/mysqladmin --defaults-file=/etc/mysql/debian.cnf"
+		if [ -z "`$MYADMIN ping 2>/dev/null`" ]; then
+		  # Really no mysqld or rather a missing debian-sys-maint user?
+		  # If this occurs and is not a error please report a bug.
+		  if ps cax | grep -q mysqld; then
+ 		    exit 1
+		  fi 
+		else
+		  $MYADMIN flush-logs
+		fi
+	endscript
+}