Support date per track in .cue files

[sylphenix]

I am using version 4.3.1 on freebsd with Qt UI. When playing a cue sheet, the "year" info is not displayed correctly. It seems that the displayed “year“ info is coming from the audio file's metadata, rather than the cue sheet. This issue only occur when the "REM DATE" is written within each track segment of the cue sheet. Ordinarily, the "REM DATE" appears only in the beginning of the file, however, if the date information for individual tracks varies, the "REM DATE" will be included within each track segment, then the problem occurs.

The following is the contents of the cue file:

TITLE "Saint-Saëns: Concertos - Ma, Licad, Lin"
REM GENRE "Classical"
REM DISCID 6E10CB09
FILE "Saint-Saens_Concertos_Ma-Licad-Lin.flac" flac
  TRACK 01 AUDIO
    TITLE "Cello Concerto No.1 in A minor, Op.33 - I. Allegro non troppo"
    PERFORMER "Yo-Yo Ma, Maazel & Orchestre National de France"
    REM DATE 1980
    INDEX 01 00:00:00
  TRACK 02 AUDIO
    TITLE "Cello Concerto No.1 in A minor, Op.33 - II. Allegretto con moto"
    PERFORMER "Yo-Yo Ma, Maazel & Orchestre National de France"
    REM DATE 1980
    INDEX 00 05:06:55
    INDEX 01 05:07:67
  TRACK 03 AUDIO
    TITLE "Cello Concerto No.1 in A minor, Op.33 - III. Tempo I. Allegro non troppo"
    PERFORMER "Yo-Yo Ma, Maazel & Orchestre National de France"
    REM DATE 1980
    INDEX 00 10:21:00
    INDEX 01 10:21:02
  TRACK 04 AUDIO
    TITLE "Piano Concerto No.2 in G minor, Op.22 - I. Andante sostenuto"
    PERFORMER "Cecile Licad, Previn & London Philharmonia Orchestra"
    REM DATE 1983
    INDEX 00 18:52:62
    INDEX 01 18:59:12
  TRACK 05 AUDIO
    TITLE "Piano Concerto No.2 in G minor, Op.22 - II. Allegro scherzando"
    PERFORMER "Cecile Licad, Previn & London Philharmonia Orchestra"
    REM DATE 1983
    INDEX 00 30:22:05
    INDEX 01 30:25:17
  TRACK 06 AUDIO
    TITLE "Piano Concerto No.2 in G minor, Op.22 - III. Presto"
    PERFORMER "Cecile Licad, Previn & London Philharmonia Orchestra"
    REM DATE 1983
    INDEX 00 35:43:12
    INDEX 01 35:45:35
  TRACK 07 AUDIO
    TITLE "Violin Concerto No.3 in B minor, Op.61 - I. Allegro non troppo"
    PERFORMER "Cho-Liang Lin, Thomas & Philharmonia Orchestra"
    REM DATE 1982
    INDEX 00 41:42:55
    INDEX 01 41:50:12
  TRACK 08 AUDIO
    TITLE "Violin Concerto No.3 in B minor, Op.61 - II. Andantino quasi allegretto"
    PERFORMER "Cho-Liang Lin, Thomas & Philharmonia Orchestra"
    REM DATE 1982
    INDEX 00 51:24:30
    INDEX 01 51:26:25
  TRACK 09 AUDIO
    TITLE "Violin Concerto No.3 in B minor, Op.61 - III. Molto moderato e maestoso"
    PERFORMER "Cho-Liang Lin, Thomas & Philharmonia Orchestra"
    REM DATE 1982
    INDEX 00 60:12:17
    INDEX 01 60:15:15