Add Sad arm64 code
Add gnu assembler support.
Refine some code
Add unittest demo for android platform
not need
not need
remove max slice number constraint
update apk name
clear up TAP space
add blockstaticidc pointer for MD
Merge pull request #886 from ganyangbbl/rm_slicenum_constraint

remove max slice number constraint
  remove redundant code for mb qp calculation
Merge pull request #895 from ruil2/enc_rc_1

  remove redundant code for mb qp calculation
Merge pull request #897 from lyao2/blockidc

add blockstaticidc pointer for MD
  fix vlc overflow
Merge pull request #896 from ruil2/enc_rc_4

fix vlc overflow
simplify stash pop bs
format update by using astyle
Merge pull request #899 from ruil2/enc_warnings

format update by using astyle
fix a bug that if..else are grouped incorrectly