[ORC] Drop 'Info' from MachOCompactUnwindInfoSectionName.

Rename MachOCompactUnwindInfoSectionName to MachOCompactUnwindSectionName.

Background:

There are two related sections used for compact-unwind info processing:
__LD,__compact_unwind -- the input table stored in relocatable object formats,
and __TEXT,__unwind_info -- the compressed table produced by the linker and
consumed by libunwind. To keep the distinction clear we'll use *CompactUnwind*
for names that refer to the __LD,__compact_unwind input tables and *UnwindInfo*
for names that refer to the __TEXT,__unwind_info output tables. Dropping 'Info'
from the variable above clarifies which section it refers to.

Author: lhames

llvm/include/llvm/ExecutionEngine/Orc/Shared/MachOObjectFormat.h

@@ -25,7 +25,7 @@ namespace orc {
 extern StringRef MachODataCommonSectionName;
 extern StringRef MachODataDataSectionName;
 extern StringRef MachOEHFrameSectionName;
-extern StringRef MachOCompactUnwindInfoSectionName;
+extern StringRef MachOCompactUnwindSectionName;
 extern StringRef MachOCStringSectionName;
 extern StringRef MachOModInitFuncSectionName;
 extern StringRef MachOObjCCatListSectionName;

llvm/lib/ExecutionEngine/Orc/MachOPlatform.cpp

@@ -1278,8 +1278,7 @@ MachOPlatform::MachOPlatformPlugin::findUnwindSectionInfo(
   if (Section *EHFrameSec = G.findSectionByName(MachOEHFrameSectionName))
     ScanUnwindInfoSection(*EHFrameSec, US.DwarfSection);
 
-  if (Section *CUInfoSec =
-          G.findSectionByName(MachOCompactUnwindInfoSectionName))
+  if (Section *CUInfoSec = G.findSectionByName(MachOCompactUnwindSectionName))
     ScanUnwindInfoSection(*CUInfoSec, US.CompactUnwindSection);
 
   // If we didn't find any pointed-to code-blocks then there's no need to

llvm/lib/ExecutionEngine/Orc/Shared/MachOObjectFormat.cpp

@@ -18,7 +18,7 @@ namespace orc {
 StringRef MachODataCommonSectionName = "__DATA,__common";
 StringRef MachODataDataSectionName = "__DATA,__data";
 StringRef MachOEHFrameSectionName = "__TEXT,__eh_frame";
-StringRef MachOCompactUnwindInfoSectionName = "__TEXT,__unwind_info";
+StringRef MachOCompactUnwindSectionName = "__TEXT,__unwind_info";
 StringRef MachOCStringSectionName = "__TEXT,__cstring";
 StringRef MachOModInitFuncSectionName = "__DATA,__mod_init_func";
 StringRef MachOObjCCatListSectionName = "__DATA,__objc_catlist";