Support debug and release versions

Modify axutil_dll_desc_create_platform_specific_dll_name() as follows:

temp_name = axutil_stracat(env, AXIS2_LIB_PREFIX, class_name);
#ifdef _DEBUG

{ axis2_char_t *temp_name2 = axutil_stracat(env, temp_name, "D"); dll_desc->dll_name = axutil_stracat(env, temp_name2, AXIS2_LIB_SUFFIX); AXIS2_FREE(env->allocator, temp_name2); }

#else
dll_desc->dll_name = axutil_stracat(env, temp_name, AXIS2_LIB_SUFFIX);
#endif

Then modify the build system for the debug build to generate dll's with names that differ from the release version by a trailing D.