Android: Fix debugger startup with recent Android SDK

Android SDK Tools 24.x ship an adb that requires in the 'adb shell'
command an additional level of quotes for parameters with spaces
compared to previous versions. That broke the passing of the
gdbserver start command and consequently debugger startup.

Task-number: QTCREATORBUG-15032
Change-Id: I442355821641d4c6a632b50d1065c442736711aa
Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>
Reviewed-by: Alex Blasche <alexander.blasche@theqtcompany.com>
Reviewed-by: Daniel Teske <daniel.teske@theqtcompany.com>

src/plugins/android/androidrunner.h

@@ -89,6 +89,7 @@ private:
     QByteArray runPs();
     void findPs();
     void logcatProcess(const QByteArray &text, QByteArray &buffer, bool onlyError);
+    bool adbShellAmNeedsQuotes();
 
 private:
     QProcess m_adbLogcatProcess;
@@ -111,7 +112,6 @@ private:
     QString m_pingFile;
     QString m_pongFile;
     QString m_gdbserverPath;
-    QString m_gdbserverCommand;
     QString m_gdbserverSocket;
     QString m_localLibs;
     QString m_localJars;