ex_cmds2.c:fix for issue #1164

fix condition while iterating over all buffers
Merge pull request #1167 from atwupack/fix-issue-1164

ex_cmds2.c:fix for issue #1164
server: Rename address environment variable

To follow the pattern of using NVIM for technical descriptions, it was renamed
to NVIM_LISTEN_ADDRESS
eval.c: Rename jobwrite to jobsend
eval.c: Rename msgpack-rpc functions for consistency
runtime: Enhance help.vim to highlight Nvim/NVIM
runtime: Initial msgpack-rpc documentation
runtime: Initial job control documentation
runtime: Add highlighting for new functions/events
runtime: Update python_setup.vim to the new rpc function names

Also improve version checking.
runtime: Document 'unnamedclip'
runtime: Document python interface, clipboard and add intro doc
Merge PR #1163 'Initial documentation of nvim features'
7.4.371
Merge pull request #1165 from splinterofchaos/fix-patch-371

7.4.371.
vim-patch:7.4.235

Problem:    It is not easy to get the full path of a command.
Solution:   Add the exepath() function.

https://code.google.com/p/vim/source/detail?r=5ab2946f7ce560985830fbc3c453bb0f7a01f385
Add vroom test for vim function exepath()
update os_can_exe unit test