added --disable-ogg option for building without Ogg support even if libogg is installed (SF#1196996: http://sourceforge.net/tracker/index.php?func=detail&aid=1196996&group_id=13478&atid=113478

add pkg-config files for libFLAC and libFLAC++ (SF#1647881: http://sourceforge.net/tracker/index.php?func=detail&aid=1647881&group_id=13478&atid=313478)

fix bug: file info crashes if file DNE (SF#1634941: http://sourceforge.net/tracker/index.php?func=detail&aid=1634941&group_id=13478&atid=313478)

add pkg-config files for libFLAC and libFLAC++ (SF#1647881: http://sourceforge.net/tracker/index.php?func=detail&aid=1647881&group_id=13478&atid=313478)

add --warnings-as-errors option to flac; for picture importing, allow MIME type in specification to be blank and filled in automatically; allow specification to be just the filename, with other fields filled in automatically

for --import-picture-from, allow MIME type in specification to be blank and filled in automatically; allow specification to be just the filename, with other fields filled in automatically

allow MIME type in specification to be blank and filled in automatically; allow specification to be just the filename, with other fields filled in automatically