add wildcard.mk and wildcard_with_var.mk test

wildcard_with_var.mk is failing

% make
echo Makefile
Makefile
% ../../kati
*kati*: parseAssign prefix = M =
*kati*: parseAssign pattern = ${prefix}* =
*kati*: parseAssign files = $(wildcard $(pattern)) =
*kati*: prefix=M
*kati*: pattern=${prefix}*
*kati*: files=$(wildcard $(pattern))
*kati*: test:
*kati*:         echo $(files)
*kati*: ASSIGN: prefix=M
*kati*: ASSIGN: pattern=${prefix}*
*kati*: ASSIGN: files=$(wildcard $(pattern))
*kati*: wildcard "prefix}*"
*kati*: RULE: test=
*kati*: Building: test
echo

%
3 files changed