Add support for verbose "local" service runscript

With this patch, the "local" service runscript will be verbose like the
"sysctl" service when 'rc_verbose="yes"' is set.

Example output successful start:

 * Stopping local ...
 *   Executing "/etc/local.d/00will-stop.stop" ...                  [ ok ]
 * Starting local ...
 *   Executing "/etc/local.d/00will-start.start" ...                [ ok ]
 *   Executing "/etc/local.d/01 test.start" ...                     [ ok ]

Example output with failing executables:

 * Stopping local ...
 *   Executing "/etc/local.d/00will-stop.stop" ...                  [ ok ]
 *   Executing "/etc/local.d/will-fail.stop" ...
mount: can't find foo in /etc/fstab
 *   Execution of "/etc/local.d/will-fail.stop" failed.             [ !! ]
 * Starting local ...
 *   Executing "/etc/local.d/00will-start.start" ...                [ ok ]
 *   Executing "/etc/local.d/01 test.start" ...                     [ ok ]
 *   Executing "/etc/local.d/will-fail2.start" ...
mount: can't find bar in /etc/fstab
 *   Execution of "/etc/local.d/will-fail2.start" failed.           [ !! ]
 *   Executing "/etc/local.d/will-fail.start" ...
mount: can't find foo in /etc/fstab
 *   Execution of "/etc/local.d/will-fail.start" failed.            [ !! ]

X-Gentoo-Bug: 489274
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=489274
init.d/local: bring functioning more in line with how sysctl works

- remove the has_executables variable since it isn't used.
- Convert the conditional calls to ewend/vewend to a single call to veend.
- Always call eend after all scripts are executed passing the appropriate
error code.

Because of this change, you will see only an overall status when
starting or stopping local unless you are using verbose mode.