Log Message:
Upgrade devel/scmgit to version 1.6.0.6 (from 1.6.0.2), in order to fix
security issues and to prepare for the outstanding upgrade of gitweb.

Changes since git 1.6.0.2:
 - Fix output line format for zip archive generation.
 - Fix continuation of git rebase -i in case of modified files (conflict).
 - Honor the pre-rebase hook for git rebase -i.
 - Fix inconsistent behavior of git diff --quiet and diff --exit-code.
 - Use multiple element hunk headers from git diff correctly.
 - Portability fix for the git diff hunk header regexps.
 - Fix git index-pack inside .git/objects/pack directory.
 - Fix git index-pack in thin-pack mode.
 - Some git stash apply fixes.
 - Fixed format string vulnerabilities (e.g. in git remote).
 - Fix behavior of git checkout -b <existingbranch>.
 - Make git checkout -q actually quiet.
 - In quiet remote operation, we don't need the remote side to send along
   all the statistics we discard.
 - Don't do cross-directory renames when creating packs.
 - git prune now also removes stale temp files under .git/objects/pack.
 - Have git merge prune empty directories.
 - Have git merge allocate enough memory for the structure itself when
   enumerating the parents of the resulting commit.
 - Stop git blame -C -C from segfaulting if it encounters a submodule
   reference.
 - If only file times were changed, don't have git rm claim local
   modifications.
 - If set-tree fails, don't let git svn output Perl compile errors.
 - Fix various NULL pointer crashes (e.g. in apply, reset, update-index).
 - Remove bash completion support for various non-space tools.
 - Don't have git add -p claim no changes if binary files have been
   modified.
 - Fix git archive in bare repositories.
 - Have git diff display the number of new or deleted files for the case
   where there have been too many of them to allow rename detection.
 - Fix git push --mirror to not try to send the stash.
 - If the remote end is up to date, still update the tracking reference upon
   git push.
 - Make git pull $there $branch:$current_branch work on unborn branches.
 - Have git reset --hard remove new paths after giving up resolving a
   conflicting merge.
 - Fix git send-email fd leak in directory scanning.
 - Make submodule directories appear as tracked in git status.
 - Have git svn invoke "git command" rather than "git-command".
 - Have git update-ref -d honor --no-deref.
 - Fix various memory leaks.
 - Fix git checkout segfault when HEAD points to a deleted branch.
 - Allow switching out of the current branch with git checkout on an
   un-checked-out state.
 - Have git fast-export export all tags.
 - Make git ls-files --with-tree=<tree> work with options other than -c.
 - If the first object in git pack-objects exceeds --max-pack-size, don't
   stuff even more objects in.
 - Stop git-p4 from replacing multilike keywords. (They don't exist.)
 - Make git tag complain about mutually incompatible options.
 - Fix performance for git internal diff on large files with repeating
   chunks.
 - Don't let git repack grab objects out of packs marked with .keep into
   new packs.
 - Fix git fsck deep recursion.
 - Fix git fast-export and fast-import on old style annotated tags without
   tagger information.
 - Have git mergetool honor the "--".
 - Fix segfault of git show <tag> where <tag> points at a \ 
nonexistent object.
 - Fix handling of lists of mail addresses for git send-email.
 - Fix branch ancestry logic in git svn if the history fetching process
   was interrupted.