uclibc++: moved to git head

uclibc++: moved to git head

Removed the 0.1.9 version as it is quite old and does not compile
renamed files dir to uclibc++
added patches to get things compiling.
Patches are gracefully picked from openwrt
(https://dev.openwrt.org/browser/packages/libs/uclibc%2B%2B/patches?rev=24017)

note that it was decided to move to git head instead of the latest release (0.2.2)
because there were quite some patches after 0.2.2 was made and it does not look like there will
be a new release soon (there is hardly any activity last 2 years or so).

Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com>
Acked-by: Khem Raj <raj.khem@gmail.com>
Acked-by: Graeme Gregory <dp@xora.org.uk>