Move missing-maps callback out of preload.c, and build non-preload and _exe archives. Fix broken logic for snarfing __addrmap_executable_end_addr.
Compiler wrappers: fix interaction between -pipe and -save-temps. Other minor fixes. Use appropriate archive when linking.
heap_index_hooks: slightly improved error reporting.
Correct flags assignment in callback. Experiment with more removal-happy behaviour when parsing maps file.
tools: build optimized.
uniqtypes: output subobject names.
Temp commit attempting to fix visibility and linkage issues.