Add run-time variables for libcdio version number/string.

lib/driver/libcdio.sym

@@ -23,6 +23,11 @@ cdio_audio_read_subchannel
 cdio_audio_resume
 cdio_audio_set_volume
 cdio_audio_stop
+cdio_charset_convert
+cdio_charset_converter_create
+cdio_charset_converter_destroy
+cdio_charset_from_utf8
+cdio_charset_to_utf8
 cdio_close_tray
 cdio_debug
 cdio_destroy
@@ -80,14 +85,14 @@ cdio_get_track_channels
 cdio_get_track_copy_permit
 cdio_get_track_format
 cdio_get_track_green
+cdio_get_track_isrc
 cdio_get_track_last_lsn
 cdio_get_track_lba
-cdio_get_track_pregap_lba
-cdio_get_track_pregap_lsn
-cdio_get_track_isrc
 cdio_get_track_lsn
 cdio_get_track_msf
 cdio_get_track_preemphasis
+cdio_get_track_pregap_lba
+cdio_get_track_pregap_lsn
 cdio_get_track_sec_count
 cdio_guess_cd_type
 cdio_have_atapi
@@ -169,6 +174,7 @@ cdio_stream_getpos
 cdio_stream_read
 cdio_stream_seek
 cdio_to_bcd8
+cdio_version_string
 cdio_warn
 cdtext_destroy
 cdtext_field2str
@@ -184,6 +190,7 @@ debug_cdio_mmc_get_conf
 debug_cdio_mmc_gpcmd
 debug_cdio_mmc_read_sub_state
 discmode2str
+libcdio_version_num
 mmc_audio_read_subchannel
 mmc_audio_state2str
 mmc_close_tray
@@ -216,8 +223,3 @@ mmc_set_speed
 mmc_start_stop_media
 mmc_timeout_ms
 track_format2str
-cdio_charset_converter_create
-cdio_charset_converter_destroy
-cdio_charset_convert
-cdio_charset_from_utf8
-cdio_charset_to_utf8

lib/driver/util.c

@@ -40,6 +40,7 @@
 #include "cdio_assert.h"
 #include <cdio/types.h>
 #include <cdio/util.h>
+#include <cdio/version.h>
 
 #ifndef PATH_MAX
 #define PATH_MAX 4096
@@ -183,6 +184,8 @@ void cdio_follow_symlink (const char * src, char * dst) {
 #endif
   
 }
+const char *cdio_version_string = CDIO_VERSION;
+const unsigned int libcdio_version_num = LIBCDIO_VERSION_NUM;
 
 
 /*