Replace the Tesseract specific data types in header files which are
part of Debian package libtesseract-dev by POSIX data types.
Update also matching cpp files.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
The constant value kNumThreads is not only used to configure the number
of threads but also to allocate vectors used in those threads.
There is only a single thread without OpenMP, so it is sufficient to
allocate vectors with only one element in that case.
Replace also the upper limit in the for loops by the known vector size.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
