Reuse PrintEscapedString for printing names in .ll  - One functionality change, '\\' in a name is now printed as a hex    escape instead of "\\\\". This is consistent with other users of    PrintEscapedString.
Reuse PrintEscapedString for printing names in .ll
 - One functionality change, '\\' in a name is now printed as a hex
   escape instead of "\\\\". This is consistent with other users of
   PrintEscapedString.


git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@58343 91177308-0d34-0410-b5e6-96231b3b80d8

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