ENH: remove -lgcc used by crazy coverage stuff

Modules/CMakeCXXInformation.cmake

@@ -126,10 +126,6 @@ IF(NOT CMAKE_CXX_CREATE_SHARED_LIBRARY)
       "<CMAKE_CXX_COMPILER> <CMAKE_SHARED_LIBRARY_CXX_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> <CMAKE_SHARED_LIBRARY_SONAME_CXX_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>")
 ENDIF(NOT CMAKE_CXX_CREATE_SHARED_LIBRARY)
 
-IF(CMAKE_COMPILER_IS_GNUCXX)
-  SET(CMAKE_CXX_CREATE_SHARED_LIBRARY "${CMAKE_CXX_CREATE_SHARED_LIBRARY} -lgcc")
-ENDIF(CMAKE_COMPILER_IS_GNUCXX)
-
 # create a c++ shared module copy the shared library rule by default
 IF(NOT CMAKE_CXX_CREATE_SHARED_MODULE)
   SET(CMAKE_CXX_CREATE_SHARED_MODULE ${CMAKE_CXX_CREATE_SHARED_LIBRARY})