Fix build with QuaZip-1.0.

--- a/phoenix.pro
+++ b/phoenix.pro
@@ -194,8 +194,8 @@
 include(pri/qtsysteminfo.pri)
 
 contains(DEFINES, QUAZIP_INSTALLED) {
-    INCLUDEPATH += /usr/include/quazip
-    LIBS += -lquazip
+    CONFIG += link_pkgconfig
+    PKGCONFIG += quazip1-qt5
 } else {
     include(pri/quazip.pri)
 }
--- a/src/utils/folderutils.cpp
+++ b/src/utils/folderutils.cpp
@@ -35,8 +35,8 @@
 
 #include "../debugdialog.h"
 #ifdef QUAZIP_INSTALLED
-#include <quazip/quazip.h>
-#include <quazip/quazipfile.h>
+#include <quazip.h>
+#include <quazipfile.h>
 #else
 #include "../lib/quazip/quazip.h"
 #include "../lib/quazip/quazipfile.h"