meta/classes: add ptest-perl.bbclass

* Enable easier testing of perl modules
  - Installs t/* to PTEST_PATH
  - Uses common run-ptest script

(From OE-Core rev: aeffa15350252489c62cd221b2e0548043fec548)

Signed-off-by: Tim Orling <timothy.t.orling@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/files/ptest-perl/run-ptest

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+for case in `find t -type f -name '*.t'`; do
+    perl $case >$case.output 2>&1
+    ret=$?
+    cat $case.output
+    if [ $ret -ne 0 ]; then
+        echo "FAIL: ${case%.t}"
+    elif grep -i 'SKIP' $case.output; then
+        echo "SKIP: ${case%.t}"
+    else
+        echo "PASS: ${case%.t}"
+    fi
+
+    rm -f $case.output
+done