* Remove old Innobase copyright lines from C source files
* Add a reference to the GPLv2 license as recommended by the lawyers
at Oracle Legal
[Step 12/28]
(followup to r4145) Non-functional change:
Change the os_atomic_increment() and os_compare_and_swap() functions
to macros to avoid artificial limitations on the types of those
functions' arguments. As a consequence typecasts from the source
code can be removed.
Also remove Google's copyright from os0sync.ic because that file no longer
contains code from Google.
Approved by: Marko (rb://88), also ok from Inaam via IM
This patch changes the innodb mutexes and rw_locks implementation.
On supported platforms it uses GCC builtin atomics. These changes
are based on the patch sent by Mark Callaghan of Google under BSD
license. More technical discussion can be found at rb://30
Approved by: Heikki
