Initial layout for svn-sparc-solaris buildbot slave.

* tools/buildbot/slaves/svn-sparc-solaris: New.
* tools/buildbot/slaves/svn-sparc-solaris/svnbuild.sh: New.
* tools/buildbot/slaves/svn-sparc-solaris/svncheck.sh: New.
* tools/buildbot/slaves/svn-sparc-solaris/svnclean.sh: New.
* tools/buildbot/slaves/svn-sparc-solaris/svnenv.sh: New.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1579021 13f79535-47bb-0310-9956-ffa450edef68