HPCC-10111 In Windows, eclcc -showpaths has mixed folder separators

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-10111 Add -showpaths to eclcc verbose help text

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #4903 from richardkchapman/eclcc-showpath

HPCC-10111 In Windows, eclcc -showpaths has mixed folder separators

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>