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GP-0 Updated ChangeHistory for 11.4.2 release

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# Ghidra 11.4.2 Change History (August 2025)
### Improvements
* _Build_. Ghidra now supports Gradle 9. (GP-5901)
* _Decompiler_. Improved Decompiler's analysis of switches where the guard condition has been duplicated across multiple basic blocks that all feed into the same switch calculation. (GP-5889)
* _Processors_. Added the SuperH GBR register to the unaffected list in the `.cspec` so that the Decompiler sees the value as preserved across subroutine calls. (GP-5912, Issue #4387)
### Bugs
* _Analysis_. Fixed switch recovery analysis speed degredation on functions with multiple potential switches. (GP-5917)
* _Decompiler_. Fixed a bug in the Decompiler's analysis of duplicated boolean expressions that could reverse the meaning of an expression. (GP-5915, Issue #8310)
* _Decompiler_. Fixed an uncaught exception in the Decompiler that resulted when `highSymbol` was null. (GP-5919, Issue #8413)
* _Exporter_. The `IntelHexExpoter` no longer fails due to falsely identifying a 32-bit program as 64-bit. Additionally, the address space option is no longer hidden. (GP-5910, Issue #8409)
* _Importer:ELF_. Corrected ELF MIPS-64 packed REL relocation processing issue seen when the relocation type R_MIPS_REL32 is included (e.g., packed type 0x1203). When 64-bit pointers are used, this relocation must read 8 bytes from memory instead of 4 bytes to produce the correct addend value. (GP-5918)
* _Importer:PE_. Fixed a regression that caused bad functions to be created in the middle of good functions in PE files with chained `IMAGE_FUNCTION_RUNTIME_ENTRY`s, and prevented some PE binaries from importing. (GP-5916, Issue #8414)
* _Importer:PE_. The `IMAGE_RESOURCE_DIRECTORY_ENTRY` data type is now correctly defined as a structure instead of a union. (GP-5935, Issue #8446)
* _PDB_. Fixed structure member issue, broken with 11.4 release, that could cause improper structure layout and Decompiler low-level errors. (GP-5928)
* _Processors_. Added additional SPE and APU instructions to e500 PowerPC variant. (GP-5945)
# Ghidra 11.4.1 Change History (July 2025)
### Improvements