Prefer the app-developer targetSdkVersion over "api level".

Only really matters in the errors shown to app developers, but we may as well be consistent throughout, especially since we almost always are anyway!

Change-Id: I37cce9d4de76579084b9f64df881b5ec6e6b3efd
diff --git a/linker/linker.cpp b/linker/linker.cpp
index 5b200eb..2393f13 100644
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -798,7 +798,7 @@
   for (auto it = start, end = soinfo_list.end(); it != end; ++it) {
     soinfo* si = *it;
     // Do not skip RTLD_LOCAL libraries in dlsym(RTLD_DEFAULT, ...)
-    // if the library is opened by application with target api level < M.
+    // if the library is opened by an application with target sdk version < 23.
     // See http://b/21565766
     if ((si->get_rtld_flags() & RTLD_GLOBAL) == 0 && si->get_target_sdk_version() >= 23) {
       continue;
@@ -1224,7 +1224,7 @@
         const soinfo* needed_or_dlopened_by = task->get_needed_by();
         const char* sopath = needed_or_dlopened_by == nullptr ? "(unknown)" :
                                                       needed_or_dlopened_by->get_realpath();
-        // is_exempt_lib() always returns true for api levels < 24,
+        // is_exempt_lib() always returns true for targetSdkVersion < 24,
         // so no need to check the return value of DL_ERROR_AFTER().
         // We still call it rather than DL_WARN() to get the extra clarification.
         DL_ERROR_AFTER(24, "library \"%s\" (\"%s\") needed or dlopened by \"%s\" "
@@ -3327,7 +3327,7 @@
   if (soname_.empty() && this != solist_get_somain() && !relocating_linker &&
       get_application_target_sdk_version() < 23) {
     soname_ = basename(realpath_.c_str());
-    // The `if` above means we don't get here for api levels >= 23,
+    // The `if` above means we don't get here for targetSdkVersion >= 23,
     // so no need to check the return value of DL_ERROR_AFTER().
     // We still call it rather than DL_WARN() to get the extra clarification.
     DL_ERROR_AFTER(23, "\"%s\" has no DT_SONAME (will use %s instead)",