Disable .uleb128 directive; fix C++ try/catch

.uleb128 doesn't support linker relaxations; use fixed-size offsets instead.
Don't over-align ELF sections
Remove LDM TLS support

It is adequate to use section anchors and GD TLS for the same performance.
Remove paged GOT logic
Emit .type, .size directives

This fixes copy relocations, which fundamentally require size information.
Don't disassemble xori for address computation