sections before looking at the symbols. Move all common symbols
into .bss section. Automatically define _edata and _end. Only
export symbols in the export list, with multiple prefixes if
necessary. Warn if no version. Always create extended header.
Set date automatically if not already set.
(setup_sections): Count size of bss sections.
(mangle_relocs, i386_mangle_relocs): Accept section argument, and
take reloc_count as a changeable pointer; changed callers.
(i386_mangle_relocs): Remove PC relative relocs within a section,
as they require no adjustment.
* nlmheader.y: Fixed memory allocation throughout: token STRING is
now allocated on the heap, and freed if not needed. Null
terminated copyright message. Accept version with only two
strings.
(symbol_list_opt): New nonterminal, either symbol_list or empty.
(symbol_list): Use left recursion to avoid overflowing parser
stack.
(yylex): Rearranged beginning of line check. Accept quoted
strings using single quotes. End generic argument at comment
character or parentheses.
(string_list_append): Fixed.
(string_list_append1): New function.
