ShellPkg: verify that leading and trailing % are removed from variable names when doing command line redirection to an environment variable.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Erik Bjorge <erik.c.bjorge@intel.com>

git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/ShellPkg@14849 6f19259b-4bc3-4df7-8a09-765794883524
ShellPkg: Skip leading tabs when processing command line and scripts

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chris Phillips <chrisp@hp.com>
reviewed-by: Jaben Carsey <jaben.carsey@intel.com>

git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/ShellPkg@14850 6f19259b-4bc3-4df7-8a09-765794883524
ShellPkg: Add DiskIO2, and fix GUID from string check to be case insensitive
- Add DiskIO2 to list of known protocols
- Fix string check to be case insensitive for commands like ‘dh –p protocolname’

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chris Phillips <chrisp@hp.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>

git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/ShellPkg@14851 6f19259b-4bc3-4df7-8a09-765794883524
ShellPkg: Rename duplicate STRING ID

There were 2 "STR_UCS2" strings.  This renames one of them so they are unique.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jaben Carsey <Jaben.carsey@intel.com>
Reviewed-by: Erik Bjorge <erik.c.bjorge@intel.com>

git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/ShellPkg@14852 6f19259b-4bc3-4df7-8a09-765794883524