Added option --bt-prioritize-piece. This option instruct aria2 to
try to download first and last pieces of each file first. The
argument can contain 2 keywords:head and tail. To include both
keywords, they must be separated by comma. These keywords can take
one parameter, SIZE. For example , if head=SIZE is specified,
pieces in the range of first SIZE bytes of each file get higher
priority. tail=SIZE means the range of last SIZE bytes of each
file. SIZE can include K or M(1K = 1024, 1M = 1024K).
* src/DefaultPieceStorage.h
* src/Makefile.am
* src/OptionHandlerFactory.cc
* src/OptionHandlerImpl.h
* src/PriorityPieceSelector.cc
* src/PriorityPieceSelector.h
* src/RequestGroup.cc
* src/prefs.cc
* src/prefs.h
* src/usage_text.h
* src/util.cc
* src/util.h
* test/Makefile.am
* test/MockPieceSelector.h
* test/PriorityPieceSelectorTest.cc
* test/UtilTest.cc
