res.partner Model Generation

[coleblarson]

Encountered this generating res.partner model from enterprise instance.

Also had to change
[EnumMember(Value = "GMT-0")]
GMT0 = 459,

to:
[EnumMember(Value = "GMT-0")]
GMTMinus0 = 459,

and
[EnumMember(Value = "Etc/GMT-1")]
EtcGMT1 = 576,
to
[EnumMember(Value = "Etc/GMT-1")]
EtcGMTMinus1 = 576,

looks like the other minus values are also off...
for Example
[EnumMember(Value = "Etc/GMT-10")]
EtcGMT10 = 577,
should maybe be
[EnumMember(Value = "Etc/GMT-10")]
EtcGMTMinus10 = 577,