Fix typos in the VxWorks code of os_unix.c.
If SQLITE_TEST_REALLOC_STRESS is defined, extend the op-code array used by virtual-machine programs by one element at a time, instead of doubling its size with each realloc().
Run a test with TEST_REALLOC_STRESS and OMIT_LOOKASIDE defined as part of releasetest.tcl on Linux/x86-64.
Improve the comments associated with SQLITE_TEST_REALLOC_STRESS and add
an extra assert() to prove an assumption.
Fix compilation issue in the Win32 VFS when manually defining SQLITE_WIN32_NO_ANSI.
Fix where9.test so that it works with the "no_optimization" permutation.