Look for jom also in "jom" subdirectory

Jom is currently installed into the Qt Creator bin/ directory directly,
but it can be considered unsafe if we add that to the PATH. Look in a
subdirectory for it as well, as preparation for moving it there instead.

Task-number: QTCREATORBUG-25585
Change-Id: I85b379fa093c57639875872868c16b5cc964f4aa
Reviewed-by: Cristian Adam <cristian.adam@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

src/plugins/cmakeprojectmanager/cmakekitinformation.cpp

@@ -33,6 +33,8 @@
 
 #include <app/app_version.h>
 
+#include <coreplugin/icore.h>
+
 #include <ios/iosconstants.h>
 
 #include <projectexplorer/kitinformation.h>
@@ -833,7 +835,8 @@ void CMakeGeneratorKitAspect::addToEnvironment(const Kit *k, Utils::Environment
     if (info.generator == "NMake Makefiles JOM") {
         if (env.searchInPath("jom.exe").exists())
             return;
-        env.appendOrSetPath(QCoreApplication::applicationDirPath());
+        env.appendOrSetPath(Core::ICore::libexecPath().toUserOutput());
+        env.appendOrSetPath(Core::ICore::libexecPath().pathAppended("jom").toUserOutput());
     }
 }
 

src/plugins/projectexplorer/msvctoolchain.cpp

@@ -1111,8 +1111,8 @@ FilePath MsvcToolChain::makeCommand(const Environment &environment) const
     FilePath command;
     if (useJom) {
         tmp = environment.searchInPath(jom,
-                                       {Utils::FilePath::fromString(
-                                           QCoreApplication::applicationDirPath())});
+                                       {Core::ICore::libexecPath(),
+                                        Core::ICore::libexecPath().pathAppended("jom")});
         if (!tmp.isEmpty())
             command = tmp;
     }