bench-all: add build benchmarks and make all benchmarks options

run: fix ./run -gu broken behaviour. Document ./tmu window switch failure.

readme: move travis failed attempt to readme.

build

@@ -14,8 +14,9 @@ linux_reconfigure=false
 linux_kernel_custom_config_file=
 post_script_args=
 qemu_sdl='--enable-sdl --with-sdlabi=2.0'
+suffix=
 v=0
-while getopts 'a:B:b:CGgj:hIiK:klp:qSv' OPT; do
+while getopts 'a:B:b:CGgj:hIiK:klp:qSs:v' OPT; do
   case "$OPT" in
     a)
       arch="$OPTARG"
@@ -77,6 +78,9 @@ BR2_TARGET_ROOTFS_INITRAMFS=n
     S)
       qemu_sdl=
       ;;
+    s)
+      suffix="$OPTARG"
+      ;;
     v)
       v=1
       ;;
@@ -87,7 +91,7 @@ BR2_TARGET_ROOTFS_INITRAMFS=n
 done
 shift $(($OPTIND - 1))
 extra_make_args="${extra_make_args} $@"
-set_common_vars "$arch" "$gem5"
+set_common_vars "$arch" "$gem5" "$suffix"
 config_file="${buildroot_out_dir}/.config"
 case "$arch" in
   x86_64)