apply patch from Marcus Hanwell: Improved quoting of tests when added to the build

cmake/EigenTesting.cmake

diff --git a/cmake/EigenTesting.cmake b/cmake/EigenTesting.cmake
index 5717747..ef36d20 100644
--- a/cmake/EigenTesting.cmake
+++ b/cmake/EigenTesting.cmake
@@ -74,7 +74,7 @@
     string(STRIP "${ARGV2}" ARGV2_stripped)
     string(LENGTH "${ARGV2_stripped}" ARGV2_stripped_length)
     if(${ARGV2_stripped_length} GREATER 0)
-      target_link_libraries(${targetname} ${ARGV2})
+      target_link_libraries(${targetname} "${ARGV2}")
     endif(${ARGV2_stripped_length} GREATER 0)
   endif(${ARGC} GREATER 2)
 

test/CMakeLists.txt

diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index a266ec4..1e2bd5a 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -133,7 +133,7 @@
   else(QT_QTCORE_LIBRARY_DEBUG)
     set(QT_QTCORE_LIBRARY ${QT_QTCORE_LIBRARY_RELEASE})
   endif(QT_QTCORE_LIBRARY_DEBUG)
-  ei_add_test(qtvector " " ${QT_QTCORE_LIBRARY})
+  ei_add_test(qtvector " " "${QT_QTCORE_LIBRARY}")
 endif(QT4_FOUND)
 ei_add_test(sparse_vector)
 ei_add_test(sparse_basic)