Fixed license information.

Add PKG_BUILD_PARALLEL to explicitly disable parallel builds.

Fixed build depends to apply only to non glibc.

Added an alternative fix to ICONV_FULL which should work better.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

-fpermissive is needed due to mismatching parameters (const char vs char).

Signed-off-by: Rosen Penev <rosenp@gmail.com>

Signed-off-by: Peter Liedholm <PeterFromSwe884@gmail.com>