Merge pull request #8: Avoid shelling out to uname on Windows

See pull request #8 on GitHub:
  #8

README.md

@@ -38,7 +38,7 @@ from the source code of the miscellaneous scripts using the Python module
 <!-- Start of generated documentation -->
 
 The documentation of the 80 functions below was extracted from
-15 Vim scripts on June 26, 2013 at 10:55.
+15 Vim scripts on July 20, 2013 at 10:41.
 
 ### Handling of special buffers
 

autoload/xolox/misc.vim

@@ -1,7 +1,7 @@
 " The version of my miscellaneous scripts.
 "
 " Author: Peter Odding <peter@peterodding.com>
-" Last Change: June 26, 2013
+" Last Change: July 20, 2013
 " URL: http://peterodding.com/code/vim/misc/
 
-let g:xolox#misc#version = '1.8.4'
+let g:xolox#misc#version = '1.8.5'

autoload/xolox/misc/os.vim

@@ -16,7 +16,7 @@ function! xolox#misc#os#is_mac() " {{{1
     if has('mac') || has('macunix') || has('gui_mac')
       " If Vim's feature list indicates we are on Mac OS X, we have our answer :-).
       let s:is_mac = 1
-    else
+    elseif !xolox#misc#os#is_win()
       " Otherwise we check the output of `uname' to avoid false negatives.
       let result = xolox#misc#os#exec({'command': 'uname', 'check': 0})
       if result['exit_code'] == 0 && get(result['stdout'], 0, '') == 'Darwin'

doc/misc.txt

@@ -151,7 +151,7 @@ from the source code of the miscellaneous scripts using the Python module
 'vimdoctool.py' included in vim-tools [5].
 
 The documentation of the 80 functions below was extracted from 15 Vim scripts
-on June 26, 2013 at 10:55.
+on July 20, 2013 at 10:41.
 
 -------------------------------------------------------------------------------
                                              *misc-handling-of-special-buffers*