[rtsan][NFC] Rename RTSAN_LINK_LIBS to RTSAN_DYNAMIC_LIBS (llvm#109991)

Follow on to llvm#109715 

This better matches this same variable in asan, ubsan, hwasan, and nsan.
Shows the logical coupling, and describes them as "dynamic only" which
is their intent.

compiler-rt/lib/rtsan/CMakeLists.txt

@@ -25,7 +25,7 @@ set(RTSAN_CFLAGS
   ${COMPILER_RT_CXX_CFLAGS}
   -DSANITIZER_COMMON_NO_REDEFINE_BUILTINS)
 set(RTSAN_LINK_FLAGS ${COMPILER_RT_COMMON_LINK_FLAGS})
-set(RTSAN_LINK_LIBS
+set(RTSAN_DYNAMIC_LIBS
   ${COMPILER_RT_UNWINDER_LINK_LIBS}
   ${SANITIZER_CXX_ABI_LIBRARIES}
   ${SANITIZER_COMMON_LINK_LIBS})
@@ -61,11 +61,11 @@ set(RTSAN_COMMON_RUNTIME_OBJECT_LIBS
   RTSanitizerCommonCoverage
   RTSanitizerCommonSymbolizer)
 
-append_list_if(COMPILER_RT_HAS_LIBDL dl RTSAN_LINK_LIBS)
-append_list_if(COMPILER_RT_HAS_LIBRT rt RTSAN_LINK_LIBS)
-append_list_if(COMPILER_RT_HAS_LIBM m RTSAN_LINK_LIBS)
-append_list_if(COMPILER_RT_HAS_LIBPTHREAD pthread RTSAN_LINK_LIBS)
-append_list_if(COMPILER_RT_HAS_LIBLOG log RTSAN_LINK_LIBS)
+append_list_if(COMPILER_RT_HAS_LIBDL dl RTSAN_DYNAMIC_LIBS)
+append_list_if(COMPILER_RT_HAS_LIBRT rt RTSAN_DYNAMIC_LIBS)
+append_list_if(COMPILER_RT_HAS_LIBM m RTSAN_DYNAMIC_LIBS)
+append_list_if(COMPILER_RT_HAS_LIBPTHREAD pthread RTSAN_DYNAMIC_LIBS)
+append_list_if(COMPILER_RT_HAS_LIBLOG log RTSAN_DYNAMIC_LIBS)
 
 add_compiler_rt_component(rtsan)
 
@@ -80,7 +80,7 @@ if (APPLE)
     OBJECT_LIBS RTRtsan
                 ${RTSAN_COMMON_RUNTIME_OBJECT_LIBS}
     LINK_FLAGS ${RTSAN_LINK_FLAGS}
-    LINK_LIBS ${RTSAN_LINK_LIBS}
+    LINK_LIBS ${RTSAN_DYNAMIC_LIBS}
     PARENT_TARGET rtsan)
 else()
   add_compiler_rt_runtime(clang_rt.rtsan