minor adjustments to explain memory use for heapsort and qsort

fix copyright header

minor cleanups by Elan and I.

fix parens

move strerror from stdio to here

move strerror to string

hash_open -> dbopen

date and time created 91/09/12 12:03:57 by bostic

db.3 -> dbopen.3

db.3 -> dbopen.3

spell out relationship betweeen R_DUP and R_NOOVERWIRTE

don't necessarily modify key in key/data return; don't automatically
assign on realloc so that recovery is possible; fix default prefix routine

bt_push -> __bt_push

get routines take const *key; move recno externs into recno.h

change bt_nrecs and set BTF_METADIRTY, BTF_MODIFIED elsewhwere; fix bug
using rchild->flags instead of bl->flags to get bigkey flag; increment parent
pages in search routines, so just clear stack; fi

change bt_nrecs and set BTF_METADIRTY, BTF_MODIFIED elsewhwere; fix bug
using rchild->flags instead of bl->flags to get bigkey flag; increment parent
pages in search routines, so just clear stack; fix cursor repositioning code
in routine doing the physical split

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bt_push -> __bt_push

delete maxkeypage; do pointer arithmetic in the macros instead of using
+= sizeof; consolidate macros; replace minkeypage with bt_ovflsize; lots
of minor cleanups.

don't modify the key in get function; change __bt_first to return
first key greater than or equal to the key.

add routine to dump the meta page

make the swap code for both in and out routines the same; make
it really work.

fix cursor code in various minor ways; fix the cursor code to return
the key greater than or equal to the specified key (implement range searches)
skip empty pages if no exact match is found

fix overflow checking code to always keep the key in memory, if possible
and take into account both key and data; add MODIFIED bit; fix maxkepage and
minkeypage (bt_ovflsize)

remove maxkeypage, fix minkeypage and rename to bt_ovflsize; fix flags
bugs, filter bugs, zero out the meta page

make close of RDONLY succeed; fix sync call to handle a cursor marked
for deletion

add append, icursor; add ability to print out page 0