Fixes to get CMake "MinGW Makefiles" generator to work.

* CMakeLists.txt: Give CMake a hint about where to find pod2man
     based on where it found perl.

   * src/cmake_modules/GncConfigure.cmake: Protect GNC_HELPDIR in
     quotes for cases where it contains spaces (like "C:\Program Files"
     on Windows).

CMakeLists.txt

@@ -329,7 +329,9 @@ if (NOT PERL_FOUND)
   MESSAGE(SEND_ERROR "Perl executable not found. Please set PERL_EXECUTABLE.")
 ENDIF(NOT PERL_FOUND)
 
-FIND_PROGRAM(POD2MAN_EXECUTABLE pod2man)
+GET_FILENAME_COMPONENT(PERL_DIR ${PERL_EXECUTABLE} DIRECTORY)
+
+FIND_PROGRAM(POD2MAN_EXECUTABLE pod2man HINTS ${PERL_DIR})
 
 # Boost stuff removed, not required on maint.
 

src/cmake_modules/GncConfigure.cmake

@@ -23,7 +23,7 @@ MACRO (GNC_CONFIGURE2 _INPUT _OUTPUT)
   FILE(WRITE ${_TMPDIR}/${_INPUT}.cmake
     "SET(PERL ${PERL_EXECUTABLE})
      SET(VERSION ${VERSION})
-     SET(GNC_HELPDIR ${GNC_HELPDIR})
+     SET(GNC_HELPDIR \"${GNC_HELPDIR}\")
      SET(GETTEXT_PACKAGE ${GETTEXT_PACKAGE})
      CONFIGURE_FILE(\${SRC} \${DST} @ONLY)")
 
@@ -39,4 +39,4 @@ MACRO (GNC_CONFIGURE2 _INPUT _OUTPUT)
                              -P ${_TMPDIR}/${_INPUT}.cmake
     DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${_INPUT}
   )
-ENDMACRO()
+ENDMACRO()