getversion get scilab and modules version information

## Syntax

    version = getversion()
                [version, opts] = getversion()
                version_numbers = getversion('scilab')
                versioninfo = getversion('scilab', 'string_info')
                version_numbers = getversion('<module>')
                versioninfo = getversion('<module>','string_info')

## Arguments

version

  a string

versioninfo

  a string about version

version_numbers

  an integer vector

  ver(1) Major version

  ver(2) Minor version

  ver(3) Maintenance version

  ver(4) GIT timestamp

opts

  a vector of string: `[compiler, architecture,[tk, modelicac, ] release_mode, release_date, release_time]`

## Description

`[version, opts] = getversion()` returns in `version` the Scilab version name and in `opts` build options which can be used to determine if scilab has been build with tk or modelicac and gives release date and time.

[tk, modelicac, atlas,] are optional.

compiler: returns compiler used to build scilab ('GCC', 'VC++', 'PGI', 'ICC', 'SUN', 'UKN' unknown)

architecture: 'x86' or 'x64'.

tk: 'tk' if tcl/tk is enabled.

modelicac: 'modelicac' if modelica compiler is distributed with scilab/xcos.

## Examples

    getversion()

    [version, opts] = getversion()
    COMPILER = opts(1)
    ARCH = opts(2)
    or(opts == 'modelicac')
    or(opts == 'tk')
    RELEASE_MODE = opts($-2)
    RELEASE_DATE = opts($-1)
    RELEASE_TIME = opts($)

    version = getversion('scilab')
    versionstr = getversion('scilab','string_info')
    version = getversion('overloading')
    versionstr = getversion('overloading','string_info')

## See also

- getmodules