Non-Determinism in GetSymbolsByName API

[bpotchik]

Version and Platform (required):

• Binary Ninja Version: Builds prior to 6419

Bug Description:
The get_functions_by_name API sometimes returns no results, even though a function by that name exists.
The get_symbols_by_name API returns a single symbol, which can be non-deterministic if multiple symbols of that name exist.

Steps To Reproduce:
Open our interprocedural_alias test binary.
Run the following:

>>> bv.get_functions_by_name('_main')
[]

Close the binary and reopen and try again:

>>> bv.get_functions_by_name('_main')
[<func: x86@0x1f5d>]

[bpotchik]

Fixed in 4.3.6914-dev.