K 10
svn:author
V 3
pfg
K 8
svn:date
V 27
2016-04-23T20:45:09.720109Z
K 7
svn:log
V 307
regex: prevent two improbable signed integer overflows.

In matcher() we used an integer to index nsub of type size_t.
In print() we used an integer to index nstates of type sopno,
typedef'd long.
In both cases the indexes never take negative values.

Match the types to avoid any error.

MFC after:	5 days

END