Rewritten SharedHandle. Now copy constructor taking raw pointer
has
keyword explicit and SharedHandle's default constructor
initializes
its internal obj to null, old implementation initializes it
using
obj's default constructor.
To assign null, write SharedHandle<T> x(...); x.reset();
TODO: test/SharedHandleTest.cc needs more tests.
* src/SharedHandle.h
Added parameterized URI support.
* src/main.cc: -Z option added.
* src/OptionHandlerFactory.cc
* src/prefs.h: Added PREF_FORCE_SEQUENTIAL.
* src/PStringDatum.h: New class.
* src/PStringSegment.{h,cc}: New class.
* src/PStringNumLoop.h: New class.
* src/PStringSelect.h: New class.
* src/NumberDecorator.h: New class.
* src/FixedWidthNumberDecorator.h: New class.
* src/AlphaNumberDecorator.h: New class.
* src/PStringVisitor.h: New class.
* src/PStringBuildVisitor.{h,cc}: New class.
* src/ParameterizedStringParser.{h,cc}: New class.
* src/Util.{h,cc}
(isNumber): New function.
(isLowercase): New function.
(isUppercase): New function.
(alphaToNum): New function.
* test/ParameterizedStringParserTest.cc: New class.
* test/AlphaNumberDecoratorTest.cc: New class.
* test/PStringBuildVisitorTest.cc: New class.
* test/UtilTest.cc
(testIsNumber): New function.
(testIsLowercase): New function.
(testIsUppercase): New function.
(testAlphaToNum): New function.
Added '\n' after the error message
* src/RequestInfo.h (printDownloadAbortMessage)
