speaking argument names for manual Fortran interfaces

Names are taken from the manual (following "Get" variant for
Fortran-only "Restore")

- no code exists for DMPlexRestoreFullMeet, so removed it.

speaking argument names for manual Fortran interfaces

Names are taken from the manual (following "Get" variant for
Fortran-only "Restore")

- no code exists for DMPlexRestoreFullMeet, so removed it.
- removed a few remaining F90 suffixes.
- removed 'tmp' argument from PetscViewerBinaryWrite. No idea what it was
used for

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Add automatic generated fortran support for setting and returning contexts

Major cleanup of the code for setting and returning application (previously called user) contexts
- PetscCtx ctx is now t

Add automatic generated fortran support for setting and returning contexts

Major cleanup of the code for setting and returning application (previously called user) contexts
- PetscCtx ctx is now the standard for passing in contexts
- PetscCtxRt ctx is the standard for passing out contexts, including context destroy routines based on PetscCtxDestroyFn

Both of these are typedef to void*

Also removed most use of user and userctx for context arguments now consistently named ctx

Improved documentation on PetscCtx and PetscCtxRt and on how to use contexts (including getting them) from Fortran

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Fortran: removed interface names

named interfaces are used to overload subroutines

Fortran: enforce lower case keywords and operators

also fixed occasional capitals in used modules with the help of @prj-

checkbadSource: enforce proper style in makefiles

Run fprettify