General cleanup of command line parsing to allow "busybox" to work as a prefix.

(I.E. any argv[0] that starts with "busybox" winds up in busybox_main().)

Added testing/busybox.tests which tests the following permutations:

./busybox
./busybox-suffix
./busybox cat
./busybox-suffix cat
./busybox --help
./busybox-suffix --help
./busybox --help cat
./busybox-suffix --help cat
./busybox --help unknown
./busybox-suffix --help unknown
./unknown

Also repair the test suite so ./runtest calls the ".tests" scripts properly.

Note: you can now go "busybox busybox busbox ls -l" and it'll take it.  The
new code is pretty generic.  I can block that if anybody can come up with a
good reason to...

1 files changed, 2 insertions, 2 deletions

diff --git a/testsuite/runtest b/testsuite/runtest
index 91b794317..6a0dc9d3e 100755
--- a/testsuite/runtest
+++ b/testsuite/runtest
@@ -97,8 +97,8 @@ for applet in $applets; do
                         status=1
                 fi
         fi
-
-        if [ -f "$applet".tests ]
+        applet=`echo "$applet" | sed -n 's/\.tests$//p'`
+        if [ ${#applet} != 0 ]
         then
                 rm -f links/"$applet"
                 ln -s ../../busybox links/"$applet"