Added support of variables in TOOL_HOME and EXPORTED_PATHS; Fixed bug with check of exported paths

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
[ExportedPaths] - Fixed issue with wrong delimiters of EXPORTED_PATHS in case of different master/slave operating systems

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
Added stub for parameters substitution from the build properties

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
Merge pull request #2 from synopsys-arc-oss/master

Support of Variables in EXPORTED_PATHS and TOOL_HOME + bug fixes (JENKINS-14515 and JENKINS-17844)