dc1a3bd999
This patch replaces LEVEL variable by REGTESTS_TYPES variable which is more mnemonic and human readable. It is uses as a filter to run the reg tests scripts where a commented #REGTEST_TYPE may be defined to designate their types. Running the following command: $ REGTESTS_TYPES=slow,default will start all the reg tests where REGTEST_TYPE is defines as 'slow' or 'default'. Note that 'default' is also the default value of REGTEST_TYPE when not specified dedicated to run all the current h*.vtc files. When REGTESTS_TYPES is not specified there is no filter at all. All the tests are run. This patches also defines REGTEST_TYPE with 'slow' value for all the s*.vtc files, 'bug' value for al the b*.vtc files, 'broken' value for all the k*.vtc files.