Each source package format can have its own command line options

Each source package format can have its own command line options

* scripts/Dpkg/Source/Package.pm (init_options): Provide default
values to various options in a format-specific way.
* scripts/Dpkg/Source/Package.pm (parse_cmdline_options,
parse_cmdline_option): New functions to handle command line options.
* scripts/dpkg-source.pl: Forward unknown options to the
source package object. Remove handling of all -s? options
and move it...
* scripts/Dpkg/Source/Package/V1_0.pm: ...here.
* scripts/Dpkg/Source/Package/V2_0.pm: Add support of options
--include-removal and --include-timestamp.
* scripts/Dpkg/Source/Package/V3_0/quilt.pm: Add support of option
--without-quilt.