create s:setCommonBufOptions() with the previously duplicated parts of
s:initNerdTreeInPlace() and s:createTreeWin()

Add nolist to buffer options.

Added new options in the file system menu

this breaks the highlighting of the nerdtree buffer, and seems dodgy

Note that for directories, there is a trailing slash

Spelling

- Reveal In Finder
 - Open with system editor
 - Quicklook

Current only when using MacVim under MacOSX

Remove the NERDTreeStopInsert option and always activate the
functionality. If, later on, it becomes apparent that some people might
not want this functionality then we can re-add the option, but in the
meantime, simplify things by removing the option.

wycats's "disallow insert mode"

An explanation from vguerci@github:

Insert mode can be entered in nerdtree not sure the exact sequence / reason, but i guess that involve using mouse (sounds weird, a bug?) :

- open nerdtree, select a buffer, enter insert mode in buffer.
- select nerdtree buffer with mouse, you're in insert mode.

...then you can easily get E21, E382 errors.
Not a big deal but that can happen, if you use mouse... (which I don't)
(reproduced this on latests macvim (vim 7.3.260) from terminal (vim) or macvim)

3bb112d916

when copying a file outside the current tree root, {} is returned by
TreeFileNode.copy() so try to reposition the cursor

Fix for an error when copying nodes

When copying a node to a directory that's outside the current path, the
"parent" node doesn't really exist, so the code raised an error.

NERDTreeFind fix revert

Some other changes causted previos commit to break the NERDTreeFind functionality
instead of fixing it. Reverting...

vimrc files(such as perdirvimrc) after BufRead.

NERDTreeFind fix

Fix for issue #22 -- "FUNCTION: NERDTreeAddNode() cannot handle paths with spaces"

Set curPathComponent to 0 correctly identify with indent level of node.

Shortening this line doesnt add anything to the UI (functionally
speaking), but removing frees up an extra line. Anyone who sets
NERDTreeMinimalUI probably uses the u/U mappings anyway.

Use \V for the updir text regex. Otherwise '..' is treated as a regex
rather than 2 literal dots.

Conflicts:
	doc/NERD_tree.txt