merged some fixes from 0.6

Rev: .cvsignore:1.15
Rev: NT/init_nt:1.16
Rev: NT/tools/lib.pike:1.6
Rev: NT/tools/rntcc:1.20
Rev: NT/tools/sprshd:1.13
Rev: src/configure.in:1.258
Rev: src/fdlib.c:1.23
Rev: src/modules/Perl/configure.in:1.4
Rev: src/modules/files/efuns.c:1.62
Rev: src/modules/files/file.c:1.132
Rev: src/modules/spider/xml.c:1.5