Revert "path: resolve normalize drive letter to lower case"

This reverts commit f6e5740180.

Changing drive letters to lowercase violates the principle of
least surprise. Other functions that do this should get fixed too.

Conflicts:
	lib/path.js

PR-URL: https://github.com/iojs/io.js/pull/100
Reviewed-By: Bert Belder <bertbelder@gmail.com>

lib/path.js

@@ -162,12 +162,6 @@ win32.resolve = function() {
   resolvedTail = normalizeArray(resolvedTail.split(/[\\\/]+/).filter(f),
                                 !resolvedAbsolute).join('\\');
 
-  // If device is a drive letter, we'll normalize to lower case.
-  if (resolvedDevice && resolvedDevice.charAt(1) === ':') {
-    resolvedDevice = resolvedDevice[0].toLowerCase() +
-        resolvedDevice.substr(1);
-  }
-
   return (resolvedDevice + (resolvedAbsolute ? '\\' : '') + resolvedTail) ||
          '.';
 };

test/simple/test-module-nodemodulepaths.js

@@ -21,7 +21,6 @@
 
 var common = require('../common');
 var assert = require('assert');
-var path = require('path');
 
 var module = require('module');
 
@@ -30,7 +29,7 @@ var isWindows = process.platform === 'win32';
 var file, delimiter, paths;
 
 if (isWindows) {
-  file = path.normalize('C:\\Users\\Rocko Artischocko\\node_stuff\\foo');
+  file = 'C:\\Users\\Rocko Artischocko\\node_stuff\\foo';
   delimiter = '\\'
 } else {
   file = '/usr/test/lib/node_modules/npm/foo';

test/simple/test-path.js

@@ -311,7 +311,7 @@ if (isWindows) {
        [['c:/ignore', 'd:\\a/b\\c/d', '\\e.exe'], 'd:\\e.exe'],
        [['c:/ignore', 'c:/some/file'], 'c:\\some\\file'],
        [['d:/ignore', 'd:some/dir//'], 'd:\\ignore\\some\\dir'],
-       [['.'], path.normalize(process.cwd())],
+       [['.'], process.cwd()],
        [['//server/share', '..', 'relative\\'], '\\\\server\\share\\relative'],
        [['c:/', '//'], 'c:\\'],
        [['c:/', '//dir'], 'c:\\dir'],