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Tear down Python to Haskell constant conversion infrastructure, which
includes eliminating the autotool 'convert-constants' and the Haskell
module, namely 'Ganeti.PyConstants', which held the converted
contants.
Signed-off-by: Jose A. Lopes <jabolopes@google.com>
Reviewed-by: Klaus Aehlig <aehlig@google.com>

Haskell to Python constant generation introduced duplicated constants
in Haskell.  This patch eliminates the duplication and fixes Haskell
to import the correct constants, instead of the generated ones.
Signed-off-by: Jose A. Lopes <jabolopes@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

Rename the generated 'Constants.hs' module, which contains the Haskell
constants generated from Python, to 'PyConstants.hs' in order to
eliminate duplicated constants in Haskell, a problem introduced by the
Haskell to Python constant generation, and to circumvent a problem
with import/export of Haskell modules.  Add a new module named
'Constants.hs' which imports 'PyConstants.hs' and exports its names.
Signed-off-by: Jose A. Lopes <jabolopes@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michele Tartara <mtartara@google.com>

Per offline discussions, this is the first patch of the
renames. Tested with "make distcheck", seems to work fine.

The only change outside of the renaming is a bit of simplification in
the .gitignore rules; otherwise, simply s/htools/src/.
Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

Signed-off-by: Agata Murawska <agatamurawska@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

With the merge of the repositories, we can now auto-generate the code
for Haskell constants from the Python code.

Currently this only handles the basic types (strings and
integers). Handling containers such as lists and dictionaries is only
possible if we would use a parser such that we recognise the element
names. We could extend the convert-constants script if that becomes
necessary, right now I'm looking at just the simple constants such as
Iallocator modes, instance states, etc.
Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>