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Sunstudio could not find memset() in cstring; changed the include to
that of "string.h".  Also it complained of an anachronism in using
"extern int close()" as a default argument.  Removed these.

Remove the READ/WRITE and DEFAULT macros by replacing them with
functions that thrown an exception on failure.  Other modifications
also made to make the code consistent with this model.

value identical to the parameter name itself.

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/vorner-sockcreator@3176 e5f2f494-b856-4b98-b285-d166d9295462

* Some of the code might be useful in other places, so it is split into
  libraries (isc::util::io and isc::util::unittests).
* Fixing flags in the sockcreator, leading to new warnings, fixing these
  warnings.
* TODO: read_data and write_data were tested implicitly with run(), but
  as they moved out to other library, they should have their own
  testcase.

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/vorner-sockcreator@3163 e5f2f494-b856-4b98-b285-d166d9295462

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/vorner-sockcreator@3162 e5f2f494-b856-4b98-b285-d166d9295462

The rest of code seems to have space between if/while and the
parenthesis.

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/vorner-sockcreator@3160 e5f2f494-b856-4b98-b285-d166d9295462

To be able to live without short reads. Needed by tests as well.

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/vorner-sockcreator@3147 e5f2f494-b856-4b98-b285-d166d9295462

Only empty functions, so it compiles at last.

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/vorner-sockcreator@3121 e5f2f494-b856-4b98-b285-d166d9295462

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/vorner-sockcreator@3120 e5f2f494-b856-4b98-b285-d166d9295462