[Patch, Fortran] Two minor tweaks for type-bound procedure parsing

[Daniel Kraft]

Hi,

this is a new patch for these problems; I did implement the name-clash 
check also for inherited symbols and also fixed the problem with PRIVATE 
components and inheritance posted in another thread.

No regressions on GNU/Linux-x86-32.  What do you think, ok to commit? 
Or should I take the part about EXTENDS out?

Daniel

-- 
Done:     Arc-Bar-Cav-Sam-Val-Wiz, Dwa-Elf-Gno-Hum-Orc, Law-Neu-Cha, Fem-Mal
To go:    Hea-Kni-Mon-Pri-Ran-Rog-Tou
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