Regex pattern for newlabel in aux files is too general

[kthoden]

Current pattern is

auxpattern = re.compile("\\\\newlabel\{(?P<label>.*?)\}\{\{(?P<num1>.*?)\}\{(?P<pagenumber>.*?)\}\{(?P<sectionname>.*?)\}\{(?P<another>.*?)\}\{(?P<whatever>.*?)\}\}")

which works ok with

\newlabel{sec1.2}{{1.1.2}{7}{The authors and their works}{section*.3}{}}

but yields wrong results with

\newlabel{facsim001}{{\caption@xref {facsim001}{ on input line 1}}{43}{Bibliography}{figure.caption.30}{}}

because of extra data in the second field. Maybe the pagenumber pattern could be made more specific, but would need to include (probably roman page numbers, as well, and what about blank pages?). Needs to be tested.