long getNextRelocatableOffset(AddressSpace space) {
			int unique = space.getUnique();
			Long nextRelocOffset = nextRelocationOffsetMap.get(unique);
			return nextRelocOffset == null ? 0 : nextRelocOffset;
		}
check if new symbol needs to grab the primary label.
Elf sometimes has multiple symbols at a location marking the type of instruction of data at the location.
@param sym - new symbol to be made primary (some exclusions apply)
@return revised symbol
Ghidra/Features/Base/src/main/java/ghidra/app/util/opinion/ElfProgramBuilder.java