GRASS_VERSION_SVN -> GRASS_VERSION_GIT + update g.version

[landam]

This PR:

• changes GRASS_VERSION_SVN compilation variable to GRASS_VERSION_GIT
• changes VERSION from 7.7.svn to more generic 7.7.dev
• updates g.version -g in order to print git reference commit

> g.version --help
...
  -g   Print info in shell script style (including Git reference commit)
...
> g.version -g
...
revision=3ff058709
...

(revision tag not changed due to backward compatibility)

Note: this PR does not solve WinGRASS-related GRASS_VERSION_SVN issue (see mswindows/GRASS-Installer.nsi.tmpl). This should be fixed by separate PR.

[landam]

Also wxGUI System Info updated to more generic 'Code revision'.

[neteler]

Thanks, still a change here is needed:

lib/init/grass.py
383:    config_detail=_("options: arch,build,compiler,path,revision,svn_revision,version"),
1905:        elif arg == 'svn_revision':

I suggest to keep svn_revision for backwards compatibility but add also a new code_revision with the same output.

In addition, svn_revision also appears here:

• lib/python/gunittest/multireport.py
• lib/python/gunittest/reporters.py
• mswindows/GRASS-Installer.nsi.tmpl

A new bug is there:

grass77 --config
--> IndexError: list index out of range

grass77 --config revision
--> IndexError: list index out of range

[landam]

--config problem is related to SVN keywords substitution, see https://github.com/OSGeo/grass/blob/master/include/gis.h#L41. See also #11.

For keyword substitution see eg. https://github.com/turon/git-rcs-keywords (or https://github.com/rsmith-nl/git-keywords for Python scripts)

[landam]

Since --config problem is an another issue (related to svn keyword substitution) I suggest to split the tasks. Let's finish (merge) this PR and open a new issue (trac) for svn keyword substitution. @neteler do you agree?

[landam]

See related open issues:

• https://trac.osgeo.org/grass/ticket/3855
• https://trac.osgeo.org/grass/ticket/3856

[landam]

For record: PR backported to relbr76 in 59225e7 / relbr74 in bfe3794.