ash: fix . builtin

Also, move [[ ]] comment to test.c and expand it

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/ash_test/ash-misc/source1.right b/shell/ash_test/ash-misc/source1.right
new file mode 100644
index 0000000..0ab7c54
--- /dev/null
+++ b/shell/ash_test/ash-misc/source1.right
@@ -0,0 +1,2 @@
+Sourced ok
+Done
diff --git a/shell/ash_test/ash-misc/source1.tests b/shell/ash_test/ash-misc/source1.tests
new file mode 100755
index 0000000..e2e75b2
--- /dev/null
+++ b/shell/ash_test/ash-misc/source1.tests
@@ -0,0 +1,5 @@
+echo "echo Sourced ok" >../sourced.sh
+PATH="..:$PATH"
+. sourced.sh
+rm ../sourced.sh
+echo Done
diff --git a/shell/ash_test/run-all b/shell/ash_test/run-all
index 4d0f39a..ad93e25 100755
--- a/shell/ash_test/run-all
+++ b/shell/ash_test/run-all
@@ -19,7 +19,7 @@
 do_test()
 {
     test -d "$1" || return 0
-    echo do_test "$1"
+#   echo do_test "$1"
     # $1 but with / replaced by # so that it can be used as filename part
     noslash=`echo "$1" | sed 's:/:#:g'`
     (