kes Move initialization of read/write res lock earlier in the code.

     This fixes the crash with a null conf file. This fixes bug
     #1030.
kes  Redefine CURES in lib/parse_conf to be URES and move it all
     into lib/parse_conf.c -- this responds to bug #1042, but does
     not fix it. The fix is not to compile with FORTIFY_SOURCE.
kes  Backport to 2.2.8 fix de-referencing a NULL pointer in the scanner from
     the trunk SVN. I don't think this was reported as a bug.