[Patch, Fortran] Remove the Fortran-only flag -fno-whole-file

[Tobias Burnus]

This patch "removes" -fno-whole-file. (Actually, it turns it into "Ignore".)


Reasoning:

* -fwhole-file/-fno-whole-file was added in 4.5 to make the transition 
easier; -fwhole-file is the default since 4.6.

* There are many wrong-code issues and probably also some ICEs with 
-fno-whole file.

* The generated code of -fwhole-file is faster as it allows for inlining.

* -fno-whole-file has been deprecated since 4.6 and announced for removal.

* Code cleanup is always nice (diff -w): 17 insertions(+), 80 deletions(-)


Build and regtested on x86-64-gnu-linux.
OK for the trunk?


Tobias

PS: Dominique pointed out that PR 45128 is a -fwhole-file "regression". 
However, it mainly shows that gfortran needs the new array descriptor to 
fix such subpointer issues (and other PRs).
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