Merge pull request #41 from emmt/emmt

Fix PCOUNT in FITS BINTABLE extensions

Merge pull request #40 from emmt/emmt

Define PCOUNT and GCOUNT in FITS IMAGE extensions

Update doc. and rename private routine to `fits_set_primitives`

Latin-1 -> UFT-8

Can read/write 64-bit integers in FITS tables

Enforce that `int` and `long` represent `int32` and `int64` in FITS files

Merge pull request #38 from emmt/emmt

`pli` default coordinates correspond to image indices

Fix size of buffer for building strings

`g_stdout` takes a `const` string

Remove trailing spaces

`const` qualifier for `p_stdout` and `p_stderr`

`const` qualifier for window/engine title/name