Release 0.8.0

See merge request hpc/gekkofs!67

Merge branch '78-errno-115-returned-on-successful-completion-for-several-system-calls' into 'master'

This fix contains three parts:

1. errno 115 was leaked during initialization of the client in
   init_ld_environment_(). However, the value on its own is irrelevant to
   this issue as all internal errno variable changes should be kept
   internal as it is the case during each syscall intercept hook.
   Therefore, the original errno variable is restored after the
   initialization finishes.
2. lseek() tests revealed that whence SEEK_SET was not handled
   correctly. It should not allow negative offsets.

3. All FIXME TODOs in the testing code have been removed including
   testing on the errno in a successful case because it is undefined.

Resolve "Errno 115 returned on successful completion for several system calls"

Closes #78

See merge request hpc/gekkofs!65

Testing on an error code in the successful case has an undefined value
and was therefore removed.

This was previously causing an errno of 115 during tests. While an errno of 0 is not guaranteed on success, all errno's within GKFS should be kept internal.

This reverts merge request !64

Merge branch '119-new-options-auto_sm-and-rpc_protocol-should-use-dashes-as-separators' into 'master'

Resolve "New options `--auto_sm` and `--rpc_protocol` should use dashes as separators"

Closes #119

See merge request hpc/gekkofs!63

Resolve "AGIOS should not be required in CMake"

Closes #118

See merge request hpc/gekkofs!62

Resolve "Set RPC protocol and auto_sm at runtime and not compile time"

Closes #101 and #118

See merge request hpc/gekkofs!40

Client now reads host file to determine auto_sm and RPC protocol

Resolve "Refactor readdir()"

Closes #117

See merge request hpc/gekkofs!55

- more error handling
- removed runtime exception from client
- Streamlining error handling in client and making it consistent. Adding comments
- Improved readdir logging

Implementation of GekkoFWD, an I/O forwarding mode for GekkoFS using AGIOS for I/O request scheduling.

See merge request hpc/gekkofs!44

data_integrity test remaining statx() to stat()

Closes #115

See merge request hpc/gekkofs!59