qmake: Allow non-bundle apps and libs to have an Info.plist

Change-Id: I5fe5c8d3214876520b5259d478ac9ef887c61e95
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>

mkspecs/features/mac/mac.prf

@@ -0,0 +1,17 @@
+
+# Embed plist file via linker if we're not building a bundle
+!isEmpty(QMAKE_INFO_PLIST) {
+    add_plist = false
+    equals(TEMPLATE, lib) {
+        plugin:!plugin_bundle: \
+            add_plist = true
+        else: !plugin:!lib_bundle: \
+            add_plist = true
+    } else: equals(TEMPLATE, app) {
+        !app_bundle: \
+            add_plist = true
+    }
+
+    $$add_plist: \
+        QMAKE_LFLAGS += -Wl,-sectcreate,__TEXT,__info_plist,$$shell_quote($$QMAKE_INFO_PLIST)
+}

tests/auto/corelib/kernel/qcoreapplication/qcoreapplication.pro

@@ -5,5 +5,5 @@ SOURCES = tst_qcoreapplication.cpp
 HEADERS = tst_qcoreapplication.h
 win32: VERSION = 1.2.3.4
 else: VERSION = 1.2.3
-darwin: QMAKE_LFLAGS += -Wl,-sectcreate,__TEXT,__info_plist,$$shell_quote($$PWD/Info.plist)
+QMAKE_INFO_PLIST = $$PWD/Info.plist
 requires(qtConfig(private_tests))