Add debug output in initial attachment code
Add debug output in initial attachment code

* strace.c (startup_attach): If -d, report pid and success/failure
  of every attach attempt.

Signed-off-by: Denys Vlasenko <50fbbd36fe0f9c8261d4a3c762c8c29ffb35e48f@redhat.com>

geekboxzone/mmallow_external_strace,Distrotech/strace,Andrey9kin/revisor,bnoordhuis/strace,Yu-AndroidM/android_external_strace,jamel/strace-plus,DirtyUnicorns/android_external_strace,pgbovine/strace-plus,Infinitive-OS/platform_external_strace,geekboxzone/mmallow_external_strace,xin3liang/platform_external_strace,TeamExodus/external_strace,jamel/strace-plus,YUPlayGodDev/platform_external_strace,xin3liang/platform_external_strace,Yu-AndroidM/android_external_strace,geofft/strace,kapdop/android_external_strace,vrastogi/strace,TeamExodus/external_strace,android-ia/platform_external_strace,TeamExodus/external_strace,geofft/strace,cuviper/strace,pombredanne/strace,YUPlayGodDev/platform_external_strace,lizh06/strace-plus,Infinitive-OS/platform_external_strace,lkundrak/strace,cuviper/strace,Distrotech/strace,geekboxzone/lollipop_external_strace,TeamExodus/external_strace,pgbovine/strace-plus,MonkeyZZZZ/platform_external_strace,MonkeyZZZZ/platform_external_strace,geekboxzone/mmallow_external_strace,AOSP-YU/platform_external_strace,geekboxzone/lollipop_external_strace,Saruta/strace,pgbovine/strace-plus,timmattison/strace-arm,Yu-AndroidM/android_external_strace,pombredanne/strace,Infinitive-OS/platform_external_strace,Saruta/strace,YUPlayGodDev/platform_external_strace,CyanogenMod/android_external_strace,AOSP-YU/platform_external_strace,gcode-mirror/strace-plus,Distrotech/strace,Infinitive-OS/platform_external_strace,jamel/strace-plus,geekboxzone/mmallow_external_strace,DirtyUnicorns/android_external_strace,bigzz/strace_android,android-ia/platform_external_strace,pgbovine/strace-plus,android-ia/platform_external_strace,geofft/strace,kapdop/android_external_strace,lizh06/strace-plus,lkundrak/strace,geekboxzone/lollipop_external_strace,lkundrak/strace,geekboxzone/lollipop_external_strace,MonkeyZZZZ/platform_external_strace,timmattison/strace-arm,Yu-AndroidM/android_external_strace,CyanogenMod/android_external_strace,Distrotech/strace,gcode-mirror/strace-plus,cuviper/strace,android-ia/platform_external_strace,geofft/strace,gcode-mirror/strace-plus,cuviper/strace,TeamExodus/external_strace,CyanogenMod/android_external_strace,bnoordhuis/strace,pombredanne/strace,android-ia/platform_external_strace,Andrey9kin/revisor,gcode-mirror/strace-plus,YUPlayGodDev/platform_external_strace,bigzz/strace_android,bigzz/strace_android,geekboxzone/mmallow_external_strace,Saruta/strace,MonkeyZZZZ/platform_external_strace,AOSP-YU/platform_external_strace,vrastogi/strace,DirtyUnicorns/android_external_strace,xin3liang/platform_external_strace,vrastogi/strace,bigzz/strace_android,YUPlayGodDev/platform_external_strace,gcode-mirror/strace-plus,DirtyUnicorns/android_external_strace,Saruta/strace,jamel/strace-plus,bigzz/strace_android,AOSP-YU/platform_external_strace,lizh06/strace-plus,pombredanne/strace,Infinitive-OS/platform_external_strace,geofft/strace,CyanogenMod/android_external_strace,kapdop/android_external_strace,bnoordhuis/strace,lizh06/strace-plus,timmattison/strace-arm,vrastogi/strace,vrastogi/strace,Saruta/strace,kapdop/android_external_strace,Andrey9kin/revisor,DirtyUnicorns/android_external_strace,xin3liang/platform_external_strace,CyanogenMod/android_external_strace,MonkeyZZZZ/platform_external_strace,lizh06/strace-plus,jamel/strace-plus,kapdop/android_external_strace,bnoordhuis/strace,pgbovine/strace-plus,AOSP-YU/platform_external_strace,geekboxzone/lollipop_external_strace,Distrotech/strace,Yu-AndroidM/android_external_strace,Andrey9kin/revisor,lkundrak/strace,cuviper/strace