QFileSelector: correct the macros for Apple platforms.

This fixes a serious regression from
7d72516b52.

[ChangeLog] QFileSelector: the identifier for OS X has been changed back
to 'osx' from 'mac', and 'mac' and 'darwin' have now been added as
selectors for Darwin OS (which is the base of both OS X and iOS).

Task-number: QTBUG-35073
Change-Id: I83183e34c5a697338cc1ddcac33a41bd379ded12
Reviewed-by: Alan Alpert <aalpert@blackberry.com>

src/corelib/io/qfileselector.cpp

@@ -157,7 +157,7 @@ QFileSelectorPrivate::QFileSelectorPrivate()
     Selectors normally available are
     \list
     \li platform, any of the following strings which match the platform the application is running
-        on: android, blackberry, ios, mac, linux, wince, unix, windows.
+        on: android, blackberry, ios, osx, darwin, mac, linux, wince, unix, windows.
     \li locale, same as QLocale::system().name().
     \endlist
 
@@ -374,12 +374,16 @@ QStringList QFileSelectorPrivate::platformSelectors()
     ret << QStringLiteral("blackberry");
 #  elif defined(Q_OS_QNX)
     ret << QStringLiteral("qnx");
-#  elif defined(Q_OS_IOS)
-    ret << QStringLiteral("ios");
 #  elif defined(Q_OS_LINUX)
     ret << QStringLiteral("linux");
-#  elif defined(Q_OS_MAC)
-    ret << QStringLiteral("mac");
+#  elif defined(Q_OS_DARWIN)
+    ret << QStringLiteral("darwin");
+    ret << QStringLiteral("mac"); // compatibility synonym
+#    if defined(Q_OS_IOS)
+    ret << QStringLiteral("ios");
+#    elif defined(Q_OS_OSX)
+    ret << QStringLiteral("osx");
+#    endif
 #  else
     struct utsname u;
     if (uname(&u) != -1)

tests/auto/corelib/io/qfileselector/qfileselector.qrc

@@ -13,8 +13,10 @@
    <file>platforms/test</file>
    <file>platforms/+unix/+android/test</file>
    <file>platforms/+unix/+blackberry/test</file>
-   <file>platforms/+unix/+ios/test</file>
-   <file>platforms/+unix/+mac/test</file>
+   <file>platforms/+unix/+darwin/+mac/+ios/test</file>
+   <file>platforms/+unix/+darwin/+mac/+osx/test</file>
+   <file>platforms/+unix/+darwin/+mac/test</file>
+   <file>platforms/+unix/+darwin/test</file>
    <file>platforms/+windows/+wince/test</file>
    <file>platforms/+windows/test</file>
    <file>platforms/+windows/test2</file>
@@ -24,12 +26,14 @@
    <file>platforms/+android/test2</file>
    <file>platforms/+blackberry/test2</file>
    <file>platforms/+ios/test2</file>
-   <file>platforms/+mac/test2</file>
+   <file>platforms/+osx/test2</file>
    <file>platforms/+linux/test2</file>
    <file>platforms/+wince/test2</file>
    <file>platforms/+android/test</file>
    <file>platforms/+blackberry/test</file>
    <file>platforms/+ios/test</file>
+   <file>platforms/+osx/test</file>
+   <file>platforms/+darwin/test</file>
    <file>platforms/+mac/test</file>
    <file>platforms/+linux/test</file>
    <file>platforms/+wince/test</file>

tests/auto/corelib/io/qfileselector/tst_qfileselector.cpp

@@ -94,7 +94,8 @@ void tst_QFileSelector::basicTest_data()
     QString test2("/test2");
     QString expectedPlatform1File(":/platforms");
     QString expectedPlatform2File(""); //Only the last selector
-#if defined(Q_OS_UNIX) && !defined(Q_OS_ANDROID) && !defined(Q_OS_BLACKBERRY) && !defined(Q_OS_IOS) && !defined(Q_OS_LINUX) && !defined(Q_OS_MAC)
+#if defined(Q_OS_UNIX) && !defined(Q_OS_ANDROID) && !defined(Q_OS_BLACKBERRY) && \
+    !defined(Q_OS_DARWIN) && !defined(Q_OS_LINUX)
     /* We are only aware of specific unixes, and do not have test files for any of the others.
        However those unixes can get a selector added from the result of a uname call, so this will
        lead to a case where we don't have that file so we can't expect the concatenation of platform