Currently used to define ssize_t on platforms that lack it.
Fix some Windows build errors caused by moving the definition into a
separate header.
Fix some narrowing warnings on Windows x64 from changing the definition
of ssize_t from long int to int64_t.
The casts in dumpcap are ugly but necessary. The whole code needs
to be rewritten for portability, or the warnings disabled.
Wmem is an alternative to GLib data structures so it should
have the same scope and be equally as convenient to use.
Wmem does not and cannot depend on anything else other than
GLib.
Blind attempt to fix Debian package brokenness managing
headers separately from install rules.
Global public headers that don't fit any of the Wireshark
libraries should be placed in include/.
Eventually the C files in the root dir should be placed somewhere
else as well (like src/) but this is not a priority.
Fixes#17726.