Added option to change path to install library on Linux.

- read BUILDING - define USE_LIBPATH

BUILDING

@@ -122,6 +122,13 @@ Available Defines
                           example:
                           $ export KDE="true"
 
+     USE_LIBPATH          By default, /usr/lib/ is used for libqupzilla and /usr/lib/qupzilla
+                          for plugins.
+                          You can change it by setting this define.
+
+                          example:
+                          $ export USE_LIBPATH="/usr/lib64/"
+
      NO_SYSTEM_DATAPATH   By default, QupZilla is using /usr/share/qupzilla/ path
                           for storing themes, translations and plugins.
                           By setting this define, QupZilla will use path of execution.

src/defines.pri

@@ -29,6 +29,7 @@ d_kde = $$(KDE)
 d_portable = $$(PORTABLE_BUILD)
 d_nonblock_dialogs = $$(NONBLOCK_JS_DIALOGS)
 d_use_qtwebkit_2_2 = $$(USE_QTWEBKIT_2_2)
+d_use_lib_path = $$(USE_LIB_PATH)
 
 equals(d_no_system_datapath, "true") { DEFINES *= NO_SYSTEM_DATAPATH }
 equals(d_use_webgl, "true") { DEFINES *= USE_WEBGL }
@@ -56,6 +57,11 @@ equals(d_use_qtwebkit_2_2, "true") { DEFINES *= USE_QTWEBKIT_2_2 }
         hicolor_folder = "$$d_prefix"share/icons/hicolor
     }
 
+    !equals(d_use_lib_path, "") {
+        library_folder = $$d_use_lib_path
+        DEFINES *= USE_LIBPATH=\\\"""$$d_use_lib_path/"\\\""
+    }
+
     DEFINES *= USE_DATADIR=\\\"""$$data_folder/"\\\""
 
     #Git revision

src/lib/plugins/plugins.cpp

@@ -159,7 +159,11 @@ void Plugins::loadAvailablePlugins()
     QStringList dirs;
     dirs << mApp->DATADIR + "plugins/"
 #ifdef Q_WS_X11
+#ifdef USE_LIBPATH
+         << USE_LIBPATH
+#else
          << "/usr/lib/qupzilla/"
+#endif
 #endif
          << mApp->PROFILEDIR + "plugins/";
 

translations/pl_PL.ts

@@ -1021,7 +1021,7 @@
         <location filename="../src/lib/other/clearprivatedata.ui" line="140"/>
         <source>Clear web databases</source>
         <translatorcomment>Z czasem poprawić. Jakieś sugestie?</translatorcomment>
-        <translation type="unfinished">Wyczyść bazy danych www</translation>
+        <translation>Wyczyść bazy danych www</translation>
     </message>
     <message>
         <location filename="../src/lib/other/clearprivatedata.ui" line="150"/>