Put _kernel.h in the correct path

Previously _kernel.h landed in pkgincludedir instead of in
pkgdatadir/include. The rationale behind this is, that headers required
by pocl should go to pkgdatadir/include, where as headers required by
3rd parties to build against pocl go into pkgcinludedir.

Signed-off-by: Fabian Deutsch <fabiand@fedoraproject.org>
Fix the installation of headers required by the kernel compiler.
Merge pull request #41 from clementleger/master

Devices: Init long_name from short name if not assigned
Unmark XFAILS on ARM & LLVM-3.4. They happen only on debug builds,
and are probably related to issue #39 (the same tests fail on some AVX in debug mode)
Fix issue #39, at least on the core-avx2 machine.
Fix build of printf() for devices without fp64.
Illegal assignment to a constant array crashed Clang 3.4.
TAS: add an assert in case we are trying to remove a function which is still referred to.
Remove ARM XFAIL fixed in 8cf8f46, related to issue #39
Add work-arounds for LLVM bug 18253.
Remove XFAILS on AVX2 machines. Fix already in commit 9e5b831.
Resolves issue #2.
Fix scripts build's search of kernel include files to match that of API mode.