test suite: rename tests containing 'fail' for easier search in logs

tests/assert/tfailedassert_stacktrace.nim

@@ -1,39 +0,0 @@
-discard """
-  cmd: "nim $target $options --excessiveStackTrace:off $file"
-  output: '''true'''
-"""
-
-const expected = """
-tfailedassert_stacktrace.nim(35) tfailedassert_stacktrace
-tfailedassert_stacktrace.nim(34) foo
-assertions.nim(*)       failedAssertImpl
-assertions.nim(*)       raiseAssert
-fatal.nim(*)            sysFatal"""
-
-proc tmatch(x, p: string): bool =
-  var i = 0
-  var k = 0
-  while i < p.len:
-    if p[i] == '*':
-      let oldk = k
-      while k < x.len and x[k] in {'0'..'9'}: inc k
-      # no digit skipped?
-      if oldk == k: return false
-      inc i
-    elif k < x.len and p[i] == x[k]:
-      inc i
-      inc k
-    else:
-      return false
-  while k < x.len and x[k] in {' ', '\L', '\C'}: inc k
-  result = i >= p.len and k >= x.len
-
-
-try:
-  proc foo() =
-    assert(false)
-  foo()
-except AssertionError:
-  let e = getCurrentException()
-  let trace = e.getStackTrace
-  echo tmatch(trace, expected)