Dear all,

the PR correctly notes that a space between keywords 'TYPE' and 'IS' is
required in free-form, but we currently accept 'TYPEIS'.  We shouldn't.
The combinations with non-optional blanks are listed in the standard;
in F2018 this is table 6.2.

While at it, I saw a couple of other keyword combinations in the matcher
and fixed these too.  I cross-checked my findings with Intel, Crayftn,
and NAG (as far as possible).

Regarding the testcase: I do not know how to write a (single!) testcase
that is able to check multiple of those fixes.  I also do not think that
it makes sense to provide a testcase for each single fixed pattern.
Therefore a provided a single, minimal testcase based on the report.

Regtested on x86_64-pc-linux-gnu.  OK for mainline (i.e. 13-master)?

Thanks,
Harald