make sure #pragma clang is treated the same way as #pragma gcc in -E mode, unknown pragmas should just be passed through to the .i file.
make sure #pragma clang is treated the same way as #pragma gcc in -E mode,
unknown pragmas should just be passed through to the .i file.


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@118659 91177308-0d34-0410-b5e6-96231b3b80d8

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