Improve stack frame analysis.

include/base/SMPFunction.h

include/interfaces/abstract/STARSInstruction.h

include/interfaces/idapro/STARSInstruction.h

include/interfaces/irdb/STARSInstruction.h

src/base/SMPDataFlowAnalysis.cpp

src/base/SMPFunction.cpp

src/base/SMPInstr.cpp

src/interfaces/idapro/STARSFunction.cpp

src/interfaces/idapro/STARSIDAInstruction.cpp

...it/trimmed-sorted-save-busybox.psexe.annot.REMOVED.git-id

...mit/trimmed-sorted-save-ffmpeg.psexe.annot.REMOVED.git-id

...mmit/trimmed-sorted-save-nginx.psexe.annot.REMOVED.git-id

...it/trimmed-sorted-save-openssl.psexe.annot.REMOVED.git-id

...mmit/trimmed-sorted-save-xedit.psexe.annot.REMOVED.git-id