adding a forgotten case in qr calls and improving unit real unit tests f...

...or qr

the call tie(a,b,c)=qr(0) was missing
I also added a scalar call and suppressed value_as

The unit test for real is now splitted among number of parameters calls (17 possibilities)
i think having each case of i/o number be done on full table and partial table is more clear than tucking all sub test afterward. It also insure EACH cases are tested for both full and partial i/o