added options and information for siemens questasim simulator support…

[ludovicpion]

… within yaml/simulator.yaml file

Added options:
+incdir+${UVM_HOME}
-L ${QUESTA_HOME}/uvm-1.2

Added comments:

Somewhere in your setup, do not forget to:

properly set UVM_HOME and QUESTA_HOME variables

add the following command: set questasim_version = vsim -version | perl -ne 'if(/Questa/){@t_tmp=split(" ",$_);print($t_tmp[3]."\n")}'

[ludovicpion]

Is there anybody to look at this pull-request?