Pyinsane

- Sane: Add workaround for scanners Samsung M288x: Option 'source' is actually
called 'doc-source'

- WIA: Set various options to default values to avoid problems when scanning
- WIA: Fix ADF support: clearly tell the driver we intend to scan pages one
by one (required for support of Brother MFC-7360N)
- WIA: Workaround: Prioritize source options over scanner options (required
for support of Brother MFC-7360N)
- WIA: Fix behavior of PyinsaneImageStream::Write() (required for support of
Brother MFC-7360N)
- Sane/Add workaround for Lexmark MFP: the option "resolution" is actually
called "scan-resolution"

- set_scanner_opt(): Fix the list of exceptions to catch when actually setting the option
- Windows/WIA: Fix: If scanning only one page, at the end of page, don't request the next page
- Windows/WIA: Make setting options more resilient to crappy drivers
- Windows/WIA: Add __str__() on most objects (useful for diagnostic)

- Windows/WIA: Fix ADF support
- Windows/WIA: Fix support of some flatbed scanners

- Windows/WIA: Also look for network scanners

- Released not done correctly. No changes with 2.0.3