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9 check-ins using file src/vdbeapi.c version a3bddeee

Defer allocating memory space to hold the array of column values and names in sqlite3_exec() until there is a need to use the array. In the common case where there is no callback, this avoids a malloc() call. (CVS 4905) (check-in: d8686abc user: drh tags: trunk)
Better integrate the new malloc related instrumentation with the test infrastructure. (CVS 4904) (check-in: d2140cae user: danielk1977 tags: trunk)
Make sure the text result of an aggregate function has the correct encoding. Ticket #3009. (CVS 4903) (check-in: 13e388ce user: drh tags: trunk)
Add a completely new testing system for the Bitvec object. The new testing system uses sqlite3_test_control() instead of unpublished APIs. Now provides 100% condition/decision coverage. Obscure bugs in Bitvec found and fixed as a result of the enhanced coverage. (CVS 4902) (check-in: 2498d3ea user: drh tags: trunk)
Add some more logging to the malloc system used when SQLITE_MEMDEBUG is defined. (CVS 4901) (check-in: 79738f58 user: danielk1977 tags: trunk)
In the sqlite3_limit() interface, take out the feature where zero means use the hard upper bound. If an application wants the hard upper bound, it can set the limit to 0x7fffffff and the bound will be automatically truncated. (CVS 4900) (check-in: d6be1f49 user: drh tags: trunk)
Reinstate test cases for the limit tests. The sqlite3_limit() API is now tested and working. (CVS 4899) (check-in: 4c4be4c3 user: drh tags: trunk)
Do not run crash7.test as part of a quick test. (CVS 4898) (check-in: 53b4a090 user: danielk1977 tags: trunk)
Initial implementation of per-connection limits and the sqlite3_limit() API. The sqllimits1.test script crashes. SQLITE_LIMIT_PAGE_COUNT and SQLITE_LIMIT_VDBE_OP are currently ignored. (CVS 4897) (check-in: 60c77882 user: drh tags: trunk)