[SMS] Add test case for the PDU parsing

[SMS] Add test case for the PDU parsing
    Add the PDUs from https://docs.openmoko.org/trac/ticket/1728 and some other
    to test that the text and sender can be properly extracted.

    Currently we pass, so if Tick's change regressed some other PDU and we get
    a bug report we can fix it and make sure the other stuff does not break

./pdutest
********* Start testing of TestPDUParsing *********
Config: Using QTest library 4.3.4, Qt 4.3.4
PASS   : TestPDUParsing::initTestCase()
PASS   : TestPDUParsing::testPDUParsing()
PASS   : TestPDUParsing::cleanupTestCase()
Totals: 3 passed, 0 failed, 0 skipped
********* Finished testing of TestPDUParsing *********