Add a tiny bit of information about using hypre's GPU solvers to the manual pages

This was all I could figure out from looking at the code

Commit-type: documentation
/spend 30m

Merge remote-tracking branch 'origin/release'

Merge branch 'jolivet/fix-asm-print_subdomains' into 'release'

PC[G]ASM: do not mix GetBool() and GetString()

See merge request petsc/petsc!4867

[KSP|PC]HPDDM: fix manual pages in options

PC[G]ASM: do not mix GetBool() and GetString()

PCBDDC: print corner selection

Merge remote-tracking branch 'origin/release'

Minor additions to various Jacobi-like PC manual pages

[KSP|PC]HPDDM: fix printf format specifiers

PCHPDDM: use option from -st_matstructure

PCHPDDM: unneeded PetscOptionsGetBool during setup

PCHPDDM: show if KSP shared with SLEPc in PCView

PCHPDDM: missing PCSetFromOptions() in inner PC

PCHPDDM: better diagnostics for MATNORMAL

Docs: tranpose -> transpose + updated references

rename PetscAssert() -> PetscCheck() and PetscAssertDebug() -> PetscAssert()

deprecate PETSC_STATIC_INLINE

make PetscStackCallStandard variadic

add PetscAssert() and PetscAssertFalse()

make PetscInfo() variadic

SETERRQ[1-9]+ begone