[lld-macho][nfc] Rename some tests for consistency

[int3]

Summary

Now all the tests that cover symbol resolution / precedence have
"resolution" in their filename.

I also added a couple of extra comments.

[thakis]

Meh, i find "order" much more descriptive than "resolution" for the order tests.

[int3]

"order" makes me think of "order files"...

lld/test/MachO/archive-symbol-resolution.s

 # REQUIRES: x86
 # RUN: rm -rf %t; split-file %s %t
 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/g.s  -o %t/g.o
 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/f1.s -o %t/f1.o
 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/f2.s -o %t/f2.o
 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/fg.s -o %t/fg.o
 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/test.s -o %t/test.o
 # RUN: %lld -dylib -o %t/libf1.dylib %t/f1.o -lSystem
 
 # RUN: llvm-ar rcs %t/libf2_g.a %t/f2.o %t/g.o
 # RUN: llvm-ar rcs %t/libfg.a %t/fg.o
 
+## (Strong) dylib symbols and archive symbols have equal precedence.
+
 # RUN: %lld %t/libf1.dylib %t/libf2_g.a %t/test.o -o %t/test.out -lSystem
 # RUN: llvm-objdump --syms --macho --lazy-bind %t/test.out | FileCheck %s --check-prefix DYLIB-FIRST
 # DYLIB-FIRST:      SYMBOL TABLE:
 # DYLIB-FIRST-DAG:  __TEXT,test_g g
 # DYLIB-FIRST:      Lazy bind table:
 # DYLIB-FIRST-NEXT: segment  section            address       dylib            symbol
 # DYLIB-FIRST-NEXT: __DATA   __la_symbol_ptr    {{[0-9a-z]+}} libf1            f
 
 # RUN: %lld %t/libf2_g.a %t/libf1.dylib %t/test.o -o %t/test.out -lSystem
 # RUN: llvm-objdump --syms --macho --lazy-bind %t/test.out | FileCheck %s --check-prefix ARCHIVE-FIRST
 # ARCHIVE-FIRST:      SYMBOL TABLE:
 # ARCHIVE-FIRST-DAG:  __TEXT,test_f2 f
 # ARCHIVE-FIRST-DAG:  __TEXT,test_g g
 # ARCHIVE-FIRST:      Lazy bind table:
 # ARCHIVE-FIRST-NEXT: segment  section            address       dylib            symbol
 # ARCHIVE-FIRST-EMPTY:
 
+## Once an archive member is fetched, all the extern symbols in that member
+## take precedence over dylib symbols of the same name.
 # RUN: %lld %t/libf1.dylib %t/libfg.a %t/test.o -o %t/test.out -lSystem
 # RUN: llvm-objdump --syms --macho --lazy-bind %t/test.out | FileCheck %s --check-prefix ARCHIVE-PRIORITY
 # ARCHIVE-PRIORITY:      SYMBOL TABLE:
 # ARCHIVE-PRIORITY-DAG:  __TEXT,test_fg f
 # ARCHIVE-PRIORITY-DAG:  __TEXT,test_fg g
 # ARCHIVE-PRIORITY:      Lazy bind table:
 # ARCHIVE-PRIORITY-NEXT: segment  section            address       dylib            symbol
 # ARCHIVE-PRIORITY-EMPTY: