Fortran 95 support.

[dorchard]

We do not yet have a Fortran 95 parser.

[harry-clarke]

95 Spec: http://j3-fortran.org/doc/standing/archive/007/97-007r2/pdf/97-007r2.pdf
1.5.1: Fortran 90 Compatibility:
- [ ] Remove real and double precision Do variable support.
- [ ] Remove branching to ENDIF statement from outside its IF construct (tricky, as may need context).
- [ ] Remove the H edit descriptor (need to look at how we currently parse format specifiers).

• Remove PAUSE statement (Parser).
• Remove ASSIGN statement (Parser).
• Remove assigned GOTO statements (may not need to do anything, but need to check, as don't know all of the use cases).
• Remove assigned format specifiers (may not need to do anything, but need to check, as don't know of the use cases).

Additional Tasks:

• Allow functions to be declared "pure".
• Allow functions to be declared "elemental".
• Add FORALL parsing.
• 4.1.1: Add component initialisation, related to NULL

(Cancelled tasks only restrict acceptable code without adding any benefit to CamFort).

[dorchard]

Sorted by 57b5b5e