Merge branch 'master' into feature/inline

This brings in changes to debugging emission - done during code-gen to
make things easier, particularly for inline functions.

Conflicts:
	src/cc1/Makefile.dep
	src/cc1/cc1_out_ctx.c
	src/cc1/cc1_out_ctx.h
	src/cc1/gen_asm.c
	src/cc1/ops/stmt_code.c
	src/cc1/out/out.h
	src/cc1/out/val.c
	src/cc1/sym.h
Rename type_die -> die_xref, for inline origin die reference
Mark via debug-info where functions are inlined
Emit lvalue-arguments to inline functions in debug info
Example of inline function having two dwarf entries

One entry for the inline function, one for the extern linkage function