Please suppress BASH_FUNC_mc%% and test-patt variable in megatest.sh/csh

BASH_FUNC_mc%% variable is set by bash on SLES12, but is not a valid variable. The error message from megatest is:

megatest.sh: line 126: export: `test-patt=': not a valid identifier
megatest.sh: line 190: export: `BASH_FUNC_mc%%=() {  .
}': not a valid identifier