Fix build problems.

Author: Philip G. Lee
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -103,8 +103,11 @@ ENDIF()
 #========================Construct the directories=============================
 
 # Debian standard directories.
-SET( EXEC_PREFIX ${CMAKE_INSTALL_PREFIX} )
-SET( DATAROOTDIR "${CMAKE_INSTALL_PREFIX}/share" )
+IF( NOT EXEC_PREFIX )
+  SET( EXEC_PREFIX ${CMAKE_INSTALL_PREFIX} )
+ENDIF()
+      
+SET( DATAROOTDIR "${EXEC_PREFIX}/share" )
 #SET( DATADIR ${DATAROOTDIR} )
 SET( BINDIR "${EXEC_PREFIX}/bin" )
 SET( DOCDIR "${DATAROOTDIR}/doc/${CMAKE_PROJECT_NAME}" )
--- a/brewtarget.qrc
+++ b/brewtarget.qrc
@@ -15,8 +15,8 @@
    - You should have received a copy of the GNU General Public License
    - along with this program.  If not, see <http://www.gnu.org/licenses/>.
 -->
-<!DOCTYPE RCC><RCC version="1.0">
-<qresource>
+<RCC>
+<qresource prefix="/">
    <file>images/glass2.png</file>
    <file>images/brewtarget_icon.svg</file>
    <file>images/donate.svg</file>
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -428,37 +428,37 @@ MESSAGE( STATUS "Libraries: ${QT_LIBRARI
 
 # Install the data.
 INSTALL( FILES ${brewtarget_DATA}
-         DESTINATION ${DATAPATH} )
+         DESTINATION "${CMAKE_INSTALL_PREFIX}/${DATAPATH}" )
 
 # Install the translations
 INSTALL(FILES ${QM_FILES}
-        DESTINATION ${DATAPATH}/translations_qm)
+        DESTINATION "${CMAKE_INSTALL_PREFIX}/${DATAPATH}/translations_qm")
 
 # Install the documentation.
 INSTALL( FILES ${brewtarget_DOCS}
-         DESTINATION ${DOCPATH} )
+         DESTINATION "${CMAKE_INSTALL_PREFIX}/${DOCPATH}" )
 
 # Install sounds.
 INSTALL( FILES ${brewtarget_SOUNDS}
-         DESTINATION "${DATAPATH}/sounds" )
+         DESTINATION "${CMAKE_INSTALL_PREFIX}/${DATAPATH}/sounds" )
 
 # ---------Unix installs-----------
 IF( UNIX AND NOT APPLE )
 
    INSTALL( TARGETS ${brewtarget_EXECUTABLE}
-            RUNTIME DESTINATION ${TARGETPATH} )
+            RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}/${TARGETPATH}" )
 
    # Install the icons.
    INSTALL( FILES ${brewtarget_ICONS}
-            DESTINATION "${DATAROOTDIR}/icons/${CMAKE_PROJECT_NAME}" )
+            DESTINATION "${CMAKE_INSTALL_PREFIX}/${DATAROOTDIR}/icons/${CMAKE_PROJECT_NAME}" )
 
    # Install the .desktop file.
    INSTALL( FILES ${brewtarget_DESKTOP}
-            DESTINATION "${DATAROOTDIR}/applications" )
+            DESTINATION "${CMAKE_INSTALL_PREFIX}/${DATAROOTDIR}/applications" )
 ENDIF()
 
 #--------Windows installs---------
 IF( WIN32 )
    INSTALL( TARGETS ${brewtarget_EXECUTABLE}
-            RUNTIME DESTINATION ${TARGETPATH} )
+            RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}/${TARGETPATH}" )
 ENDIF()
