RwGitTool>>gitstatusIn:with: misbehaves when repositoryRootPath is not the root of a git repository

[dalehenrich]

There is a project that is embedded in another git project and Rowan guesses wrong when it decides that the project is a git project ... RwGitTool>>gitstatusIn:with: can return bogus status information:

(Rowan gitTools gitstatusIn: self repositoryRootPath with: '--porcelain')
"'?? rowan/
?? src/
'"

in this case the rowan and src directories are nowhere to be found ... and the git repository that the project is sitting in has not modifications ...
Here are the repositoryRootPaths for the two projects:

{
(Rowan projectNamed: 'gemstoneBaseImage') repositoryRootPath.
(Rowan projectNamed: 'generateGs') repositoryRootPath.
}
 "anArray( 
    '/bosch1/users/dhenrich/_stones/37x/f_37x', 
    '/bosch1/users/dhenrich/_stones/37x/f_37x/build/generateGs/projects/generateGs')"

The root cause of this is that the generateGs is incorrectly identified as a git project:

{
(Rowan projectNamed: 'gemstoneBaseImage') useGit.
(Rowan projectNamed: 'generateGs') useGit.
}
 "anArray( true, true)"