Gwenhywfar

Fixed a typo.

Added test for environment variable.

Minor code simplifications.

CSV: Cleanup, allow for subfields.

The CSV importer can now also handle subfields and parse them accordingly.
This is usefull if a CSV field contains more structured data.

In such a case the column spec in the configuratin file must contain a
DB_Group instead of a variable like in this example:...

Removed unneeded file.

Moved to "c" folder and split into multiple files.

Merge branch 'mp-202110-typemaker2_cleanup'

typemaker2: Some ideas for future iterations...

typemaker2: More cleanup. Finished for now.

typemaker2: Fixed some newly introduced bugs.

GWEN_FORMAT helped very much with this...

base: Add format attribute to GWEN_Buffer_AppendArgs().

This allows for the compiler to check arguments for this function.

typemaker2: More cleanup (TM2C_BuildCopy).

typemaker2: Minor beautification.

typemaker2: Cleanup dup code.

typemaker2: More cleanup.

typemaker2: Started cleanup.

typemaker2 is an essential tool for AqBanking and AqFinance, so it has to be
easily maintainable.

Revert "gwenbuild: Remove duplicate code (there already is GWB_Parser_ReadXmlDataIntoStringList)."

This reverts commit 26e22240902bce6f0b81c5779466b017bfbe79c0.

gwenbuild: Remove duplicate code (there already is GWB_Parser_ReadXmlDataIntoStringList).

gwenbuild: Fixed CLI args. "-s" now directly takes the source folder.

gwenbuild: Started added handling of language catalogs.

These changes will make it easier to add new types later.
Basically we now create a GWB_TARGET for every language catalog and make it
install to the appropriate folder below $(localedir).
- added file element <i18n> to be used for language catalogs...

gwenbuild: Updated README.

gwenbuild: Cleanup GWB_Utils_VersionStringToDb().

gwenbuild: Define filenames, no longer use them directly.

This allows for centrally changing of filenames.

gwenbuild: Remove debug function.

gwenbuild: Improved depfile handling. Fixed pointers.

- moved code into its own file.
- simplified reading a gcc depfile by cleaning it up first.
- set pointers to NULL after freeing

Removed no longer needed builder defs (are now in posix and windows folders).