More '\0' -> NULL replacements to avoid clang warnings
Disable non-literal-null-conversion warning issued by clang
Fix crash in gncOwnerGetOwnerFromLot due to clobbered stack variable.

The "owner-type" lot property is 64 bits, don't store it in a 32 bit variable.
Use symbols to access lot owner type and owner GUID properties.
Bug 733107: Search for reconcile status doesn't work right.
Merge branch 'maint'
Rewrite gnc-numeric to be multi-precision decimal float

Using the decimal float library from http://www.bytereef.org/mpdecimal
Adjust Engine files to compile with mpdecimal

Not to be confused with actually working!
Adjust gnome, gnome-utils, and gnome-search for mpdecimal
Adjust app-utils for mpdecimal
Adjust backends, business, and engine and qof tests to compile with mpdecimal.
Adjust import-export to compile with mpdecimal
Initial changes to gnc-numeric tests for mpdecimal.

Only about half pass at this point, and it still crashes partway through.
Remove qofmath128
Fix kvp_frame numeric string tests to remove rational number notation for gnc_numeric_zero values.
Provide a fast (comparisons only) function to find the exponent value of an int64_t.
Fix attempt to assign gnc_numeric from 2-element array.
Declare const member functions which don't change the object.

So that they can be called on const objects.
Change signature of GncNumeric::apply_binary to add denom argument.

So that it rounds correctly when denom is used as part of the rounding spec.
Whitespace fixups.