nds32-sim: Remove gmon/profile.
nds32-sim: Remove supprting Linux.
nds32-sim: Remove warnings.
nds32-sim: Fix test cases - change V3 to v3.
nds32-sim: Remove nds32-load. Use common/sim-hload.c.
nds32-sim: Revise bit-field operations.
nds32-gdb: Revise a few comments.
nds32-record: initial works on process-record
nds32-gdb: Remove custome types.
nds32-gdb: Remove test cases for ifc.
nds32-gdb: Cleanup prologue-analyze.