Change the name ZERO_DAMAGE to the more descriptive POWERSAFE_OVERWRITE.
The query parameter used to control this device characteristic is now "psow".

FossilOrigin-Name: 6191c5e45175f5c6040e891843b0725a929d6dd7

• manifest[diff]
• manifest.uuid[diff]
• src/os_unix.c[diff]
• src/os_win.c[diff]
• src/pager.c[diff]
• src/sqlite.h.in[diff]
• src/sqliteInt.h[diff]
• src/test1.c[diff]
• src/test6.c[diff]
• src/test_vfs.c[diff]
• src/wal.c[diff]
• test/journal2.test[diff]
• test/zerodamage.test[diff]