CtypesGen doesn't like single digit integers

[Alan-R]

In pplexer.py, there is the following definition:
INT_LITERAL = sub(r"(?P<p1>(?:0x{H}+)|(?:0[0-7]+)|(?:[1-9]{D}+))(?P<suf>{IS})")

This requires that octal integers consist of more than one digit, and also the same for decimal integers. The following line fixes these problems:
INT_LITERAL = sub(r"(?P<p1>(?:0x{H}+)|(?:0[0-7]*)|(?:[1-9]{D}*))(?P<suf>{IS})")

Note in both cases the replacement of a + character with a * character.

[Alan-R]

This should be fixed now. Will reopen if it's not...