apr-util: add v1.6.3, simplify patching

[valgur]

.

[AbrilRBS]

Regenerating missing binaries now

[conan-center-bot]

Conan v1 pipeline ✔️

All green in build 1 (466d81b7448b755176566ad85e4f891384a3be35):

• apr-util/1.6.3:
  All packages built successfully! (All logs)

• apr-util/1.6.1:
  All packages built successfully! (All logs)

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Conan v2 pipeline ✔️

Note: Conan v2 builds are now mandatory. Please read our discussion about it.

All green in build 1 (466d81b7448b755176566ad85e4f891384a3be35):

• apr-util/1.6.3:
  All packages built successfully! (All logs)

• apr-util/1.6.1:
  All packages built successfully! (All logs)

[CLAassistant]

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