Synnefo » snf-ganeti

Add a module for handling compression

Since the Haskell 'zlib' library by default uses exceptions for
signalling errors, we need to use its internals to implement a proper,
pure decompressing function.

Signed-off-by: Petr Pudlak <pudlak@google.com>
Reviewed-by: Klaus Aehlig <aehlig@google.com>