Allow reading lines longer than 64 KiB in SvStream, and reading CSV rows and
cells longer than 64 KiB in OpenOffice Base. (They are now limited to
~2 GiB).

- New member functions were added to the m

Allow reading lines longer than 64 KiB in SvStream, and reading CSV rows and
cells longer than 64 KiB in OpenOffice Base. (They are now limited to
~2 GiB).

- New member functions were added to the main/tools SvStream class to work
with 32 bit ::rtl::OUString and ::rtl::OStringBuilder when reading lines.
- The helper class QuotedString had to be upgraded from using the 16 bit
String to the 32 bit ::rtl::OUString.
- The CSV database driver was patched to use ::rtl::OUString and 32 bit
indexes in various places.
- Luckily, little other work was needed, as the ORowSetValue class already
uses 32 bit ::rtl::OUString, and was previously converting 16 bit String
to 32 bit ::rtl::OUString internally anyway.

Also simplified some of the line parsing logic, and translated some
German comments to English.

Patch by: me

(cherry picked from commit 7b2bc0e6bba2fbc38d078306fe10d875115d6c86)

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