ActivityMonitor: fixed minor issue CID 609788.

* If the circular buffer was created with a size of zero, fBuffer would
  be freed without being initialized.
Update BMessage documentation adding Get* methods.

Also, lots of little cleanups: formatting, adding return statements and
return values where they were missing, fix spelling mistakes, add newlines to
separate command blocks, remove trailing whitespace.
nfs4: Fix wrong parenthesising in ReplyInterpreter::_FlattenPathname

This patch solves CID 990966.
nfs4: Ensure that a string is NULL terminated after strncpy()

This fixes CID 990971.
nfs4: Fix CID 990984 and 991173: missing assignment in error check
nfs4: Fix error checking in NFS4Server::_Renewal()

This fixes CID 990985.
nfs4: Do not rely on implementation defined casting uint32 to int32

This solves CID 991172.
nfs4: Fix CID 991174: improve error checking in NFS4Inode::OpenFile()
nfs4: Fix CID 991246: use name of the old entry when reporting removal
nfs4: Fix CID 991294: error handling issues in Auth::CreateSys()
nfs4: Fix memory leaks in case of error in ReplyInterpreter::_DecodeAttrs()

This patch fixes CID 991505, 991504, 991502, 991500, 991499, 991496.
nfs4: Fix CID 991506: memory leak in case of error
nfs4: check for presence of FATTR4_CHANGE is not required

This fixes CID 991501.
nfs4: Take advantage of strlcpy()
nfs4: Fix error handling issues in Inode::Open() and Inode::Create()

This fixes CID 991498.
nfs4: Remove RequestBuilder::ReadDir() count argument

The argument is ignored anyway. This fixes CID 991593.
nfs4: Fix memory leaks in case of errors while reading a directory

This fixes CID 991497.
nfs4: Remove check for presence of mandatory attributes

This fixes CID 991495.
nfs4: Fix CID 991752: remove unnecessary return
swrast_legacy: fix gcc2 GL rendering

* hrev45297 removed the setting of the defines
  in addition to removing the --no-warnings
* Found after a git bisect and stpere's sharp eyes
* Finally resolves #9473