Git-Support: Added escaping of filenames. Added committing of merges.

- Filenames are escaped before Vim or Shell commands are run.
- Handle filenames which appear escaped in quotes in the status buffer.
- Added 'GitCommitMerge'.
- Internal changes.
Latex-Support: help file, README, rc-files, several additions and mprovements

- complete help file
- new README, changelog
- several rc-files added
- bugfixes in several templates
- plugin: comment toggle, hardcopy, minor improvements
Templates: Various commands are now executed silently.

- Templates are inserted and indented silently.
- Menu entries are executed silently.
- 'ChooseStyle' only echoes "Style stayed XYZ." if the old style has been picked again interactively via "ChooseStyle ( <library>, '!pick' )".
C-Support: non-C comments, run debugger

- toggle non-C comments, \cn
- run debugger, \rd
- run menu rearranged
Git-Support: Fixed working directory issue.

- The buffers now keep track of the working directory they were last updated from.
- Minor corrections.
Merge remote-tracking branch 'origin/master'
Git-Support: Improved syntax highlighting and folding.

- New 'foldtext' function, which produces custom text for diff, log, status ...
- New syntax for commit messages, marks lines which are to long.
- Separate syntax file for diff, used by log and status.
- Syntax categories now have a fallback for highlighting using Vim's own categories.
- Documentation.
Git-Support: Added a readme.

- Added a readme.
- Added suggestions for the customization of .vimrc and .gvimrc.
Git-Support: Added more Git commands.

- Added 'blame', 'mv', 'show' and 'tag'.
- Improved 'commit':
  Redirecting the output of 'commit --dry-run ...' into a buffer.
- Improved 'stash':
  Redirecting the output of 'stash list' and 'stash show' into buffers.
- Minor changes.
- Updated the documentation.
Git-Support: Improved Windows compatibility.

- Renamed the Git buffers.
  Windows can not handle ":" in names of files/buffers.
- Checks "help.format". If a browser is used to display the help,
  ':GitHelp' does not open a buffer anymore.
- Minor corrections.
Git-Support: Running arbitrary Git commands.

- Added running of arbitrary Git commands:
  Output can optionally be redirected into a buffer.
- Internal changes.
Git-Support: Minor Windows issues.
Git-Support: Added known issues.

- Added a known issue concerning windows to the documentation.
C-Support: behavior of some global variables changed

- some global variables now changeable on the fly
- typos fixed
Merge branch 'master' into csupport-dev