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2011-10-30xregcomp: don't consider every regex compilation failure an internal error.David Bremner
This pushes the error handling up one step, but makes the function more flexible. Running out of memory still triggers an internal error, in the spirit of other xutils functions.
2011-10-30xutil.c: remove duplicate copies, create new library libutil.a to contain xutil.David Bremner
We keep the lib/xutil.c version. As a consequence, also factor out _internal_error and associated macros. It might be overkill to make a new file error_util.c for this, but _internal_error does not really belong in database.cc.