fixed copy behavior of recordings and accumulator buffers

improvements to predicate API
default rules encapsulated in LLInitParam
removed empty flag from viewer asset stats

added support for specifying predicates for xui and llsd serialization

fixed llpredicate so that values and rules work uniformly with predicate logic
and/or/negate works in parallel with set/clear

fixed crash on exit

improved predicate system, added uncertain/unknown predicates

added return value to serialize function to track if any values were written

sanitized param block code to accept isValid and isProvided at any point
added predicates to control serialization

finished most of conversion of llviewerassetstats
ported some param block fixes from viewer-chui
converted viewer asset stats to param block format

Instead of forbidding std::map<const std::type_info*, ...> outright (which
includes LLRegistry<const std::type_info*, ...> and LLRegistrySingleton<const
std::type_info*, ...>), try to make it work by specializing std::less<const
std::type_info*> to use std::type_info::before().
Make LLRegistryDefaultComparator<T> use std::less<T> so it can capitalize on
that specialization.

Although LLRegistry and LLRegistrySingleton have always defined a COMPARATOR
template parameter, it wasn't used for the underlying map. Therefore every
type, including any pointer type, was being compared using std::less. This
happens to work most of the time -- but is tripping us up now.
Pass COMPARATOR to underlying std::map. Fix a couple minor bugs in
LLRegistryDefaultComparator (never before used!). Specialize for const char*.
Remove CompareTypeID and LLCompareTypeID because we now actively forbid using
LLRegistry<std::type_info*, ...>; remove only known reference
(LLWidgetNameRegistry definition).

Per discussion with Richard, accept the type key for insert() and find() as a
template parameter rather than as std::type_info*. This permits (e.g.) some
sort of compile-time prehashing for common types, without changing the API.
Eliminate iterators from the API altogether, thus avoiding costs associated
with transform_iterator.
Fix existing references in llinitparam.h.

In a number of places, the viewer uses a lookup based on std::type_info*. We
used to use std::map<std::type_info*, whatever>. But on Linux,
&typeid(SomeType) can produce different pointer values, depending on the
dynamic load module in which the code is executed. Introduce
LLTypeInfoLookup<T>, with an API that deliberately mimics
std::map<std::type_info*, T>. LLTypeInfoLookup::find() first tries an
efficient search for the specified std::type_info*. But if that fails, it
scans the underlying container for a match on the std::type_info::name()
string. If found, it caches the new std::type_info* to optimize subsequent
lookups with the same pointer.
Use LLTypeInfoLookup instead of std::map<std::type_info*, ...> in
llinitparam.h and llregistry.h.
Introduce LLSortedVector<KEY, VALUE>, a std::vector<std::pair<KEY, VALUE>>
maintained in sorted order with binary-search lookup. It presents a subset of
the std::map<KEY, VALUE> API.

moved LLInitParam, and LLRegistry to llcommon
moved LLUIColor, LLTrans, and LLXUIParser to llui
reviewed by Nat

as well as () operator

fixed handle downcast not initiating handle

ChoiceBlock can now derive from another param block
Params with name/value support can be assigned directly in C++ code using
param = "named_value"

reviewed by Leslie

fixed not serializing named values when values provided from code

added Flag as value type
moved Batch to BatchBlock
renamed Choice to ChoiceBlock
made merging of parameters for ValueParams consistent (fillFrom and overwriteFrom are inverses of each other now)
made iteration over Multiple<T> type params easier
initial schema param blocks

usage: <foo><bar/></foo> will set the bar flag on foo
LLSD foo; foo["bar"]; will set the bar flag on foo
converted notifications unique to use flag

changed ordering of template loading relative to constructor setting of params
moved a lot of constructor-set params to template files
reviewed by Leslie

fixed regression where profile window wasn't using requested size

fixed regression where preferred content size was no longer being respected

Modified viewer window to not create a navigation bar on exit if one doesn't yet exist.

Reviewed by Richard.