Update to LLVM 16

This includes the following API changes:

• Core:
  • New functions:
    • LLVMGetVersion
    • LLVMTargetExtTypeInContext
  • Removed functions:
    • LLVMConstFNeg
    • LLVMConstGEP
    • LLVMConstInBoundsGEP
    • LLVMAddAlias
    • LLVMBuildInvoke
    • LLVMBuildLoad
    • LLVMBuildGEP
    • LLVMBuildInBoundsGEP
    • LLVMBuildStructGEP
    • LLVMBuildCall
    • LLVMBuildPtrDiff
  • New type kind:
    • LLVMTargetExtTypeKind
  • New value kind:
    • LLVMConstantTargetNoneValueKind
• Debug info:
  • New source languages known by DWARF:
    • LLVMDWARFSourceLanguageKotlin
    • LLVMDWARFSourceLanguageZig
    • LLVMDWARFSourceLanguageCrystal
    • LLVMDWARFSourceLanguageC_plus_plus_17
    • LLVMDWARFSourceLanguageC_plus_plus_20
    • LLVMDWARFSourceLanguageC17
    • LLVMDWARFSourceLanguageFortran18
    • LLVMDWARFSourceLanguageAda2005
    • LLVMDWARFSourceLanguageAda2012
  • New kind of metadata nodes:
    • LLVMDIAssignIDMetadataKind
• Initializaton:
  • Removed functions:
    • LLVMInitializeObjCARCOpts
    • LLVMInitializeAggressiveInstCombiner
    • LLVMInitializeInstrumentation
• Transforms:
  • Removed transforms:
    • AggressiveInstCombine
  • IPO:
    • Removed function:
      • LLVMAddPruneEHPass
• OrcV2:
  • New function types:
    • LLVMMemoryManagerCreateContextCallback
    • LLVMMemoryManagerNotifyTerminatingCallback
  • New function:
    • LLVMOrcCreateRTDyldObjectLinkingLayerWithMCJITMemoryManagerLikeCallbacks

Signed-off-by: Michal Rostecki vadorovsky@gmail.com