Print all libcurl calls if -DDEBUG_CURLIO. Don't create static lib for cwdebug.

Basically, cmake doesn't support linking static libs into a shared lib.
The correct way is to just specify source files in subdirectories
directly as source files of the shared library. This patch changes that.

Also, after this commit, when DEBUG_CURLIO is defined, every call to
libcurl is printed to llinfos (or to dc::curl when using libcwd).

indra/llcommon/CMakeLists.txt

@@ -250,6 +250,7 @@ set(llcommon_HEADER_FILES
 set_source_files_properties(${llcommon_HEADER_FILES}
                             PROPERTIES HEADER_FILE_ONLY TRUE)
 
+list(APPEND llcommon_SOURCE_FILES ${cwdebug_SOURCE_FILES})
 list(APPEND llcommon_SOURCE_FILES ${llcommon_HEADER_FILES})
 
 add_library (llcommon SHARED ${llcommon_SOURCE_FILES})
@@ -262,15 +263,9 @@ target_link_libraries(
     ${ZLIB_LIBRARIES}
     ${WINDOWS_LIBRARIES}
     ${BOOST_REGEX_LIBRARY}
-    ${CWDEBUG_LIBRARIES}
     ${CORESERVICES_LIBRARY}
     )
 
-if (LINUX)
-    # When linking with llcommon later, we do not want to link with cwdebug.a again.
-    set_property(TARGET llcommon PROPERTY LINK_INTERFACE_LIBRARIES "-lapr-1 -laprutil-1 -lz")
-endif (LINUX)
-
 if (DARWIN)
     # Don't embed a full path in the library's install name
     set_target_properties(