2730: New - The setup command should perform some basic memory tuning
Note: this issue is not fully covered by the proposed modifications but
all that is missing in order to fix it is to figure out which are the
default memory values that we want to propose in the setup.

2620: Server should be started as server JRE and clients should be
started as client JREs

The proposed solution goes beyond fixing the two issues and proposes a
manner for the user to set specific java arguments (and use a specific
JVM) for every command-line.

Today the user can specify the JVM to be used using the OPENDS_JAVA_HOME
environment variable and the java arguments by using the
OPENDS_JAVA_ARGS environment variable.  In the case of the JVM this
covers most of the use cases (in general we will use the same JVM for
all the command-lines).  However this is quite limiting in the case of
the java arguments we pass.  For instance in general we want to run the
server (start-ds command-line) using the server mode of the JVM but
other command-lines using the -client mode of the JVM.  In the same
manner we might want to have a bigger heap when running the server than
when we are running a "lightweight" utility as dsconfig.

The proposed solution is to have a properties file called
java.properties where the user specifies the different JVM and java
arguments to be used for every command-line.  Once the user has edited
this properties file, (s)he must run a command-line called
dsjavaproperties that will update all the scripts to use the arguments
specified in that properties file.

NOTE: there are a number of command-lines (import-ldif, export-ldif,
backup, restore) where the user will be able to specify different java
arguments (and different JVM) to use depending on whether the
command-line is run in online or offline modes.  You can see the
comments on java.properties to get more information about this and in
general about the different properties that can be set.

The modification in the setup basically try to check if the JVM that is
being used to run the setup (the one that will be used by default)
supports the -client and -server options.  Depending on the results of
these checks the setup will update the java.properties file and then run
dsjavaproperties to update the scripts.