Fix CatchAddTests.cmake for tests with spaces

Fixes #146.

Author: zauguin

cmake/CatchAddTests.cmake

@@ -51,7 +51,7 @@ string(REPLACE "\n" ";" output "${output}")
 # Parse output
 foreach(line ${output})
   # Test name; strip spaces to get just the name...
-  string(REGEX REPLACE " +" "" test "${line}")
+  string(REGEX REPLACE "^ +" "" test "${line}")
   # ...and add to script
   add_command(add_test
     "${prefix}${test}${suffix}"