This refactors 3 functions out of ShellCommandLib and puts them into a new library (but as 2 functions instead of 3). This allows for users outside of the shell itself to have access to these functions.

1) Remove the 3 functions out of the shell's internal library (ShellCommandLib)
2) Add a new library class (PathLib)
3) Add an instance of this class (BasePathLib)
4) Change all internal shell callers to use this new library class.

signed-off-by: jcarsey
reviewed-by: jljusten

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11936 6f19259b-4bc3-4df7-8a09-765794883524

ShellPkg/Library/BasePathLib/BasePathLib.inf

@@ -0,0 +1,38 @@
+##  @file
+#  Provides interface to path manipulation functions.
+#
+#  Copyright (c) 2011, Intel Corporation. All rights reserved. <BR>
+#
+#  This program and the accompanying materials
+#  are licensed and made available under the terms and conditions of the BSD License
+#  which accompanies this distribution. The full text of the license may be found at
+#  http://opensource.org/licenses/bsd-license.php
+#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x00010006
+  BASE_NAME                      = BasePathLib
+  FILE_GUID                      = ED244F93-B97A-4a17-83E0-A03CF2A7F7B4
+  MODULE_TYPE                    = UEFI_DRIVER
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = PathLib|UEFI_APPLICATION UEFI_DRIVER
+
+#
+#  VALID_ARCHITECTURES           = IA32 X64 IPF EBC
+#
+
+[Sources.common]
+  BasePathLib.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+  ShellPkg/ShellPkg.dec
+  
+
+[LibraryClasses]
+  BaseMemoryLib
+  BaseLib