Put the gettext init code in a macro and define it appropriately
depending on whether gettext is actually available or not.

This partially reverts 023cc0d37776976b4b192b7363f73a5d2debdef6, goes
back to using PROJECT_NAME for the filename and also uses PROJECT_NAME
as text domain in the source code.

fixed error if gettext is disabled

german translation file
and bashscript to update translations

german translation file
and bashscript to update translations

Fixed objects being sometimes not able to be stored statically in a block when block has been unloaded

New map generator added (and SQLite, messed up the commits at that time...) (import from temporary git repo)

Moved some mapnode content stuff from mapnode.{h,cpp} and digging property stuff from material.cpp to content_mapnode.{h,cpp}

Reduced server CPU usage on NodeMetadata step()s. Also furnace now cooks while no players are near it.

--HG--
extra : rebase_source : bb7c083b9ab2989d90f41255b85e9e3edaf578ef

--HG--
extra : rebase_source : 8ad4d13fc7ab1088ebd18cf968d912949aab8eae

--HG--
extra : rebase_source : 7260636295d9068fbeeddf4143c89f2b8a91446c

a work-in-progress map modified callback interface (committing because i want to merge the fence stuff)