Added --log-basename to mysqld to allow one to set the prefix for all logs with one command

Changed test suite to use --log-basename (to get the code tested)
Added --sync-sys=1 to test suite to speed it up.
Better error messages if something goes wrong with mysql_install_db


mysql-test/Makefile.am:
  Removed not existing directory
mysql-test/lib/My/ConfigFactory.pm:
  Use log-basename
  We had to also set 'log_error' as some test was explicitely using the old name
  Added 'sync-sys=1' to speed up test suite
mysql-test/r/variables-notembedded.result:
  Updated test results (variable relay_log is now set)
mysql-test/suite/binlog/t/binlog_delete_and_flush_index-master.opt:
  Force specific names for some log files.
mysql-test/suite/binlog/t/binlog_index-master.opt:
  Force specific names for some log files.
mysql-test/suite/binlog/t/binlog_stm_unsafe_warning-master.opt:
  Force specific names for some log files.
mysql-test/suite/binlog/t/binlog_stm_unsafe_warning.test:
  Better error message if something goes wrong
mysql-test/suite/rpl/r/rpl_flushlog_loop.result:
  Updated results
mysql-test/suite/rpl/rpl_1slave_base.cnf:
  Use --log-basename
scripts/mysql_install_db.sh:
  More information to --help
  Write url to knowledge base if something goes wrong
  Fail at once if we can't create a database directory (no reason to continue and write a screenful of not related text)
scripts/mysqld_safe.sh:
  Also allow one to use --data for --datadir (common shortening)
  Added support for --log-basename
  Fail at once if we can't create a log directory
  Fixed bug where we used a pid file name without '.pid' extension
sql/log.cc:
  Create a log file name trough my_once_alloc()  (To get it automaticly freed at exit)
sql/mysql_priv.h:
  Added new prototype
sql/mysqld.cc:
  Added support for --log-basename
  Better help for a lot of log-filename related variables.
sql/rpl_rli.cc:
  Write information that one can use --log-basename
sql/set_var.cc:
  Add log_basename as a readonly variable

scripts/mysql_install_db.sh

@@ -50,6 +50,8 @@ Usage: $0 [OPTIONS]
                        use hostnames will use IP addresses.
   --ldata=path         The path to the MariaDB data directory. Same as
                        --datadir.
+  --no-defaults        Don't read any configuration files (my.cnf).
+  --defaults-file=path Read only this configuration file.
   --rpm                For internal use.  This option is used by RPM files
                        during the MariaDB installation process.
   --skip-name-resolve  Use IP addresses rather than hostnames when creating
@@ -79,6 +81,13 @@ s_echo()
   fi
 }
 
+link_to_help()
+{
+  echo
+  echo "The latest information about mysql_install_db is available at"
+  echo "http://kb.askmonty.org/v/installing-system-tables-mysql_install_db."
+}
+
 parse_arg()
 {
   echo "$1" | sed -e 's/^[^=]*=//'
@@ -194,7 +203,7 @@ cannot_find_file()
   echo "If you are using a binary release, you must either be at the top"
   echo "level of the extracted archive, or pass the --basedir option"
   echo "pointing to that location."
-  echo
+  link_to_help
 }
 
 # Ok, let's go.  We first need to parse arguments which are required by
@@ -213,6 +222,7 @@ parse_arguments PICK-ARGS-FROM-ARGV "$@"
 if test -n "$srcdir" && test -n "$basedir"
 then
   echo "ERROR: Specify either --basedir or --srcdir, not both."
+  link_to_help
   exit 1
 fi
 if test -n "$srcdir"
@@ -335,6 +345,7 @@ then
       echo "hostname."
       echo "If you want to solve this at a later stage, restart this script"
       echo "with the --force option"
+      link_to_help
       exit 1
     fi
     echo "WARNING: The host '$hostname' could not be looked up with resolveip."
@@ -356,7 +367,12 @@ for dir in $ldata $ldata/mysql $ldata/test
 do
   if test ! -d $dir
   then
-    mkdir -p $dir
+    if ! `mkdir -p $dir`
+    then
+      echo "Fatal error Can't create database directory '$dir'"
+      link_to_help
+      exit 1
+    fi
     chmod 700 $dir
   fi
   if test -w / -a ! -z "$user"
@@ -389,7 +405,7 @@ mysqld_install_cmd_line="$mysqld_bootstrap $defaults $mysqld_opt --bootstrap \
   --net_buffer_length=16K"
 
 # Create the system and help tables by passing them to "mysqld --bootstrap"
-s_echo "Installing MariaDB/MySQL system tables..."
+s_echo "Installing MariaDB/MySQL system tables in '$ldata' ..."
 if { echo "use mysql;"; cat $create_system_tables $fill_system_tables; } | eval "$filter_cmd_line" | $mysqld_install_cmd_line > /dev/null
 then
   s_echo "OK"
@@ -410,9 +426,7 @@ else
   echo
   echo "Try 'mysqld --help' if you have problems with paths.  Using"
   echo "--general-log gives you a log in $ldata that may be helpful."
-  echo
-  echo "The latest information about mysql_install_db is available at"
-  echo "http://kb.askmonty.org/v/installing-system-tables-mysql_install_db."
+  link_to_help
   echo "MariaDB is hosted on launchpad; You can find the latest source and"
   echo "email lists at http://launchpad.net/maria"
   echo
@@ -454,13 +468,13 @@ then
   echo "databases and anonymous user created by default.  This is"
   echo "strongly recommended for production servers."
   echo
-  echo "See the MySQL manual for more instructions."
+  echo "See the MariaDB knowledge or the MySQL manual for more instructions."
 
   if test "$in_rpm" -eq 0
   then
     echo
     echo "You can start the MariaDB daemon with:"
-    echo "cd $basedir ; $bindir/mysqld_safe &"
+    echo "cd $basedir ; $bindir/mysqld_safe --datadir=$ldata"
     echo
     echo "You can test the MariaDB daemon with mysql-test-run.pl"
     echo "cd $basedir/mysql-test ; perl mysql-test-run.pl"