HPCC-10536 Remove hardcoded references to c:\ and /c$

There are a couple places (dlslerver.cpp and rmtspawn.cpp) where a default
filespec is used when querying the environment for temp and log directories
fail. Although this is unlikely, these default locations need to be updated
to use the HPCCSystems standard locations

Signed-off-by: William Whitehead <william.whitehead@lexisnexis.com>
HPCC-10601 Regression Suite test cases tags handling should be case-insensitive

Ignore case in tag checking
Improve tag handling.

Signed-off-by: Attila Vamos <attila.vamos@gmail.com>
HPCC-10412 Fix problems with #elseif and catch multiple #else

Signed-off-by: Gavin Halliday <gavin.halliday@lexisnexis.com>
HPCC-10412 Add test cases for the #elseif fixes

Signed-off-by: Gavin Halliday <gavin.halliday@lexisnexis.com>
Merge pull request #5251 from AttilaVamos/HPCC-10601-fix

HPCC-10601 Regression Suite test cases tags handling should be case-insensitive

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #5212 from RussWhitehead/defDirs

HPCC-10536 Remove hardcoded references to c:\ and /c$

Reviewed-By: Jake Smith <jake.smith@lexisnexis.com>
Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #5252 from ghalliday/issue10412

HPCC-10412 Fix problems with #elseif and catch multiple #else

Reviewed-By: Jamie Noss <james.noss@lexisnexis.com>
Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>