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This reverts commit 8f74718c, reversing
changes made to 956a0a58.

Acked on jabber

Conflicts:
	ChangeLog
	src/lib/datasrc/sqlite3_accessor.h
	src/lib/datasrc/tests/database_unittest.cc

and rejustify

in tearDown.

need it in a future version, but as it was explicitly pointed out in review
it's probably less confusing to remove it completely.

DataSourceClient.get_journal_reader().

Changed PROGNAME to static char *
Build program modules as C files
Removed malloc.h

updated the test data schema for the diffs table.