remove openpgp dependent codes

• LGPL license for openpgpjs was removed.
• asn1hex 1.1.7 to 1.1.8
  • ASN1HEX.dump also supports ASN1Object as argument
• asn1x509
  • API document update
• pkcs5pkey 1.0.7
  • merge @machinewu's pull request for API doc fix
• dsa 2.0.0
  • some of my own codes are moved from dsa-modified-1.0.js
    to dsa-2.0.0 and old openpgpjs codes are re-writed with
    my own codes and all of openpgpjs codes are removed from
    jsrsasign.
• crypto 1.1.10 to 1.1.11
  • some static random number generator methods are
    added to KJUR.crypto.Util class for new dsa-2.0:
    getRandomHexOfNbytes, getRandomBigIntegerOfNbytes,
    getRandomHexOfNbits, getRandomBigIntegerOfNbits,
    getRandomBigIntegerZeroToMax, getRandomBigIntegerMinToMax
• REMOVED
  • dsa-modified-1.0.js, ext/THIRDPARTY_LICENSE.pgp.txt
• test/qunit-do-*.html
  • most of test codes are updated.