fix qt5 cmake config to use absolute install path instead of relative path so unlinked mkspec files can be found

qt5_cmake_find2.diff

--- a/qtbase/src/corelib/corelib.pro	2016-12-01 00:17:04.000000000 -0800
+++ b/qtbase/src/corelib/corelib.pro	2017-01-03 00:23:17.000000000 -0800
@@ -103,11 +103,8 @@
 cmake_extras_mkspec_dir.input = $$PWD/Qt5CoreConfigExtrasMkspecDir.cmake.in
 cmake_extras_mkspec_dir.output = $$DESTDIR/cmake/Qt5Core/Qt5CoreConfigExtrasMkspecDir.cmake
 
-CMAKE_INSTALL_DATA_DIR = $$cmakeRelativePath($$[QT_HOST_DATA], $$[QT_INSTALL_PREFIX])
-contains(CMAKE_INSTALL_DATA_DIR, "^\\.\\./.*"):!isEmpty(CMAKE_INSTALL_DATA_DIR) {
-    CMAKE_INSTALL_DATA_DIR = $$[QT_HOST_DATA]/
+    CMAKE_INSTALL_DATA_DIR = $$[QT_INSTALL_PREFIX]/
     CMAKE_INSTALL_DATA_DIR_IS_ABSOLUTE = True
-}
 
 cmake_extras_mkspec_dir_for_install.input = $$PWD/Qt5CoreConfigExtrasMkspecDirForInstall.cmake.in
 cmake_extras_mkspec_dir_for_install.output = $$DESTDIR/cmake/install/Qt5Core/Qt5CoreConfigExtrasMkspecDir.cmake

qt5_cmake_find_package.diff

--- a/qtbase/src/corelib/corelib.pro	2016-12-01 00:17:04.000000000 -0800
+++ b/qtbase/src/corelib/corelib.pro	2016-12-30 22:19:34.000000000 -0800
@@ -94,12 +94,9 @@
 
 CMAKE_DISABLED_FEATURES = $$join(QT_DISABLED_FEATURES, "$$escape_expand(\\n)    ")
 
-CMAKE_HOST_DATA_DIR = $$cmakeRelativePath($$[QT_HOST_DATA/src], $$[QT_INSTALL_PREFIX])
-contains(CMAKE_HOST_DATA_DIR, "^\\.\\./.*"):!isEmpty(CMAKE_HOST_DATA_DIR) {
-    CMAKE_HOST_DATA_DIR = $$[QT_HOST_DATA/src]/
+    CMAKE_HOST_DATA_DIR = $$[QT_INSTALL_PREFIX]/
     CMAKE_HOST_DATA_DIR_IS_ABSOLUTE = True
-}
 
 cmake_extras_mkspec_dir.input = $$PWD/Qt5CoreConfigExtrasMkspecDir.cmake.in
 cmake_extras_mkspec_dir.output = $$DESTDIR/cmake/Qt5Core/Qt5CoreConfigExtrasMkspecDir.cmake