BUG: Fix installed cswig reference to SWIGLib

The SWIG_LIB_INSTALL value must be set before the configure_file command
for "swigconfig.h".  The old code worked only in old CMake versions that
delayed configuration to the end.  This fix allows an installed cswig to
locate its installed swig library.

GCC_XML/KWSys/kwsysDateStamp.cmake

@@ -7,4 +7,4 @@ SET(KWSYS_DATE_STAMP_YEAR  2009)
 SET(KWSYS_DATE_STAMP_MONTH 05)
 
 # KWSys version date day component.  Format is DD.
-SET(KWSYS_DATE_STAMP_DAY   19)
+SET(KWSYS_DATE_STAMP_DAY   20)

SWIG/CMakeLists.txt

@@ -25,6 +25,9 @@ SET(SWIG_LIB "\"${SWIG_SOURCE_DIR}/Lib\"")
 SET(SWIG_CXX "\"${CMAKE_CXX_COMPILER}\"")
 SET(SWIG_PLATFORM "\"${CMAKE_SYSTEM}-${CMAKE_C_COMPILER}\"")
 
+SET(SWIG_LIB_INSTALL
+  ${CMAKE_INSTALL_PREFIX}/${CableSwig_INSTALL_ROOT}lib/CableSwig/SWIGLib)
+
 INCLUDE (${CMAKE_ROOT}/Modules/CheckIncludeFiles.cmake)
 INCLUDE (${CMAKE_ROOT}/Modules/CheckLibraryExists.cmake)
 
@@ -159,6 +162,4 @@ CONFIGURE_FILE(${SWIG_SOURCE_DIR}/SWIGConfig.cmake.in
   ${SWIG_BINARY_DIR}/SWIGConfig.cmake @ONLY IMMEDIATE)
 
 # Install support library.
-SET(SWIG_LIB_INSTALL
-  ${CMAKE_INSTALL_PREFIX}/${CableSwig_INSTALL_ROOT}lib/CableSwig/SWIGLib)
 SUBDIRS(Lib)