Allow to use system Java on Windows / OS X

[Andrey Vihrov]

Forcing a bundled copy is not good because:

• It takes additional space on disk and in memory
• It cannot be easily updated to the latest version, and
• As it becomes old, bugs and security holes may be revealed in this copy

One solution could be

• Modify launcher scripts to use system javaw if the jre/ directory is not present
• Add a "Install Java (private copy)" installer option that would create the jre/ directory

[Petr Nejedly]

It will only work with 32 bit JRE's though

[Andrey Vihrov]

What if the installer installed also 64-bit ServiioConsole64.exe and ServiioService64.exe? By default these wouldn't be used, but people would be able to utilize them with a 64-bit system Java installation.

[Petr Nejedly]

will be able to use JAVA_HOME variable on Windows to point to a 32bit Java (via the exe) or 32/64 bit (via the bat files)