Fix stat decoding for LP64 bionic
Fix stat decoding for LP64 bionic

Patch fb642bb6d63f7ffe2228bf48a6008bc8f56f67ff fixed building with
HAVE_STAT64 for aarch64 with uapi kernel headers but not x86_64.
The workaround needed to be applied to all LP64 architectures, not
just aarch64.  This patch fixes that and adds an explanatory comment.

Signed-off-by: Elliott Hughes <fcce078dda1e415b072bbd7a0d74a20c665f0947@google.com>

geofft/strace,xin3liang/platform_external_strace,DirtyUnicorns/android_external_strace,android-ia/platform_external_strace,bnoordhuis/strace,bnoordhuis/strace,CyanogenMod/android_external_strace,lkundrak/strace,CyanogenMod/android_external_strace,Distrotech/strace,xin3liang/platform_external_strace,AOSP-YU/platform_external_strace,Infinitive-OS/platform_external_strace,Yu-AndroidM/android_external_strace,DirtyUnicorns/android_external_strace,DirtyUnicorns/android_external_strace,cuviper/strace,MonkeyZZZZ/platform_external_strace,MonkeyZZZZ/platform_external_strace,Yu-AndroidM/android_external_strace,bigzz/strace_android,vrastogi/strace,geofft/strace,MonkeyZZZZ/platform_external_strace,pombredanne/strace,geekboxzone/mmallow_external_strace,geekboxzone/mmallow_external_strace,bigzz/strace_android,geekboxzone/lollipop_external_strace,kapdop/android_external_strace,Saruta/strace,Infinitive-OS/platform_external_strace,kapdop/android_external_strace,bigzz/strace_android,Distrotech/strace,cuviper/strace,geekboxzone/mmallow_external_strace,xin3liang/platform_external_strace,AOSP-YU/platform_external_strace,Yu-AndroidM/android_external_strace,TeamExodus/external_strace,DirtyUnicorns/android_external_strace,android-ia/platform_external_strace,CyanogenMod/android_external_strace,Yu-AndroidM/android_external_strace,kapdop/android_external_strace,DirtyUnicorns/android_external_strace,bigzz/strace_android,YUPlayGodDev/platform_external_strace,geekboxzone/lollipop_external_strace,xin3liang/platform_external_strace,geofft/strace,bnoordhuis/strace,android-ia/platform_external_strace,Saruta/strace,pombredanne/strace,TeamExodus/external_strace,Saruta/strace,lkundrak/strace,AOSP-YU/platform_external_strace,CyanogenMod/android_external_strace,YUPlayGodDev/platform_external_strace,Distrotech/strace,lkundrak/strace,lkundrak/strace,Infinitive-OS/platform_external_strace,bnoordhuis/strace,AOSP-YU/platform_external_strace,TeamExodus/external_strace,vrastogi/strace,android-ia/platform_external_strace,YUPlayGodDev/platform_external_strace,bigzz/strace_android,AOSP-YU/platform_external_strace,cuviper/strace,pombredanne/strace,CyanogenMod/android_external_strace,cuviper/strace,geofft/strace,vrastogi/strace,kapdop/android_external_strace,Saruta/strace,YUPlayGodDev/platform_external_strace,geekboxzone/lollipop_external_strace,Distrotech/strace,Distrotech/strace,android-ia/platform_external_strace,Yu-AndroidM/android_external_strace,geekboxzone/mmallow_external_strace,kapdop/android_external_strace,MonkeyZZZZ/platform_external_strace,pombredanne/strace,vrastogi/strace,YUPlayGodDev/platform_external_strace,cuviper/strace,geekboxzone/lollipop_external_strace,Saruta/strace,geofft/strace,Infinitive-OS/platform_external_strace,MonkeyZZZZ/platform_external_strace,geekboxzone/mmallow_external_strace,TeamExodus/external_strace,geekboxzone/lollipop_external_strace,TeamExodus/external_strace,Infinitive-OS/platform_external_strace,vrastogi/strace